CN207908132U - A kind of office seating Mechanics Performance Testing equipment - Google Patents

Abstract

The utility model is an office seat mechanical performance testing equipment, which comprises a support frame, a motor group, a screw group and an actuator; the actuator includes a cushion test rod, a backrest test rod and two handle test rods, and the seat cushion test rod It includes an electric cylinder connected in sequence, a telescopic rod, a first connector, a connecting rod and a buttock profiling pad, and the backrest test rod includes an electric cylinder connected in sequence, a telescopic rod, a second connector and a back profiling pad, and the The handle test rod includes an electric cylinder connected in sequence, a telescopic rod, a third connecting piece and a hand profiling frame; the first connecting piece, the second connecting piece and the third connecting piece are overall S-shaped Centrosymmetric structure. The utility model can carry out mechanical tests on office chairs of different models, and the executive mechanism is provided with different connecting pieces to achieve the effect of fully imitating the structure of a human body.

Description

An office seat mechanical performance testing equipment

technical field

The utility model relates to the field of testing office chairs, in particular to equipment for testing the mechanical properties of office chairs.

Background technique

Office chairs are closely related to people's daily life, its quality inspection is very important, and the mechanical properties are crucial criteria for judging the quality of office chairs, so I designed the structural design of office chair testing equipment. The performance test of the office chair needs to complete the mechanical performance test and obtain relevant data according to the test method required by the QB/T 2280-2007 office chair standard. However, the existing test equipment cannot simultaneously test multiple parts of the office chair, which reduces the reliability of the test.

Therefore, it is necessary to propose a testing device for the mechanical properties of office chairs.

Utility model content

In view of the technical problems existing in the background technology, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a mechanical performance testing device for office chairs.

In order to solve the above technical problems, the utility model adopts the following technical measures:

A kind of equipment for testing the mechanical properties of an office seat, including a support frame, a motor group, a screw group and an actuator; the support frame includes an external support, a horizontal suspension frame and a vertical suspension frame, and the horizontal suspension frame and the vertical suspension frame The two ends of both ends are slidingly connected with the external bracket through sliders; the motor group is fixedly arranged on the support frame, the motor group is connected with the screw group, and the motor group is used to drive the screw group Rotate to realize the control of the vertical movement of the horizontal suspension frame; the executive mechanism includes a cushion test rod, a backrest test rod and two handle test rods, and the seat cushion test rod and the handle test rod communicate with the handle test rod through a slide block The horizontal suspension frame is connected, and the backrest test rod is connected with the vertical suspension frame through a slider; the cushion test rod includes an electric cylinder, a telescopic rod, a first connector, a connecting rod and a buttock profiling pad connected in sequence , the backrest test rod includes an electric cylinder, a telescopic rod, a second connector and a back profiling pad connected in sequence, and the handle test rod includes an electric cylinder, a telescopic rod, a third connector and a hand profiling pad connected in sequence frame; the first connecting piece, the second connecting piece and the third connecting piece are all in an S-shaped centrally symmetrical structure, and each connecting piece includes a first connecting portion and a second connecting portion connected end to end , the third connection part, the fourth connection part and the fifth connection part; the first connection part, the third connection part and the fifth connection part are arranged parallel to each other; the second connection part and the fourth connection part are vertical on the first connecting part.

As a further improvement, the first connecting piece, the second connecting piece and the third connecting piece are all made of titanium alloy.

As a further improvement, define the distance between the first connecting part and the third connecting part in the first connecting part as L1; define the distance between the first connecting part and the third connecting part in the second connecting part The distance between the first and third connecting parts is L2; the distance between the first connecting part and the third connecting part in the third connecting part is defined as L3; wherein, L1>L3>L2.

As a further improvement, the ratio of L1, L2, and L3 is 3:1:2.

As a further improvement, the value of L1 is 3CM.

As a further improvement, the telescopic rod includes an active rod, a driven rod, a first fixed piece and a second fixed piece, and the two ends of the active rod are respectively fixedly connected with the first fixed piece and the electric cylinder, so The second fixed piece is slidably sleeved on the active rod and fixedly connected to the electric cylinder, one end of the driven rod is fixedly connected to the first fixed piece, and the other end is slidably sleeved on the second fixed piece. inside the film.

As a further improvement, the support frame is further provided with an office chair fixing clip.

As a further improvement, the slider is provided with a fixed handle.

As a further improvement, a rectangular frame is provided on the connecting rod, and the backrest test rod passes through the vertical centerline of the rectangular frame.

As a further improvement, the included angle formed by the cushion test rod and the backrest test rod is 70°-75°.

Compared with the prior art, the utility model has the following advantages:

1. The mechanical property testing equipment of the office chair of the utility model can test multiple parts of the office chair at the same time, which is more in line with the actual use situation and makes the test effect more reliable.

2. The utility model is an office seat mechanical performance testing equipment. Each actuator is equipped with a connecting piece that conforms to the bone and joint structure, so that the effect of the actuator test is more in line with the human body structure, and the test effect is more reliable.

Description of drawings

Accompanying drawing 1 is the three-dimensional structural diagram of a kind of office seat mechanical property testing equipment of the present utility model.

Accompanying drawing 2 is a side view of an office chair mechanical performance testing device of the present utility model.

Accompanying drawing 3 is the structural schematic diagram of a seat cushion test rod of an office seat mechanical performance test equipment of the utility model.

Accompanying drawing 4 is the structure schematic diagram of the handle test rod of a kind of office seat mechanical performance testing equipment of the utility model.

Accompanying drawing 5 is the structure schematic diagram of the backrest test rod of a kind of office seat mechanical performance test equipment of the utility model.

Accompanying drawing 6 is the structure schematic diagram of a kind of office seat mechanical property testing equipment connector of the utility model.

Accompanying drawing 7 is the structure schematic diagram of the connecting rod of the mechanical performance testing equipment of an office chair of the utility model.

Description of main component symbols

External bracket 100

slider 110

Fixed handle 111

Horizontal hanger 200

Seat test rod 210

Electric cylinder 211

Telescopic rod 212

Second fixed piece 2121

Active rod 2122

Follower lever 2123

The first fixed piece 2124

First connector 213

First connection part 2131

Second connection part 2132

The third connection part 2133

Fourth connection part 2134

Fifth connection part 2135

Connecting rod 214

Rectangular frame 2141

buttock contour pad 215

Backrest test rod 220

Second connector 221

back profile pad 222

Handle test rod 230

Third connector 231

hand profiling frame 232

vertical hanger 300

Motor unit 400

Screw group 500

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments described above are some of the embodiments of the present utility model, but not all of them. Based on the implementation manners in the present utility model, all other implementation manners obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model. Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present utility model, all other implementation manners obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the Describes, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

Please refer to Fig. 1-Fig. 6, in the embodiment, a kind of office seat mechanical performance testing equipment includes a support frame, a motor unit 400, a screw group 500 and an actuator; the support frame includes an external support 100, a horizontal suspension frame 200 and a vertical suspension frame 300, both ends of the horizontal suspension frame 200 and the vertical suspension frame 300 are slidably connected to the external support 100 through a slider 110; the motor unit 400 is fixedly arranged on the support frame, The motor group 400 is connected with the screw group 500, and the motor group 400 is used to drive the rotation of the screw group 500, so as to control the vertical movement of the horizontal suspension frame 200; the actuator includes a cushion test rod 210, backrest test bar 220 and two handle test bars 230, described cushion test bar 210 and described handle test bar 230 are connected with described horizontal suspension frame 200 by slide block 110, and described backrest test bar 220 is passed slide block 110 It is connected with the vertical suspension frame 300; the cushion test rod 210 includes an electric cylinder 211, a telescopic rod 212, a first connector 213, a connecting rod 214 and a buttock profiling pad 215 connected in sequence, and the backrest test rod 220 Including electric cylinder 211, telescopic rod 212, second connecting member 221 and back profiling pad 222 connected in sequence, the handle test rod 230 includes electric cylinder 211, telescopic rod 212, third connecting member 231 and hand Profile frame 232; the first connector 213, the second connector 221 and the third connector 231 are in an S-shaped centrally symmetrical structure as a whole, and each connector includes a first connection end-to-end part 2131, the second connecting part 2132, the third connecting part 2133, the fourth connecting part 2134 and the fifth connecting part 2135; the first connecting part 2131, the third connecting part 2133 and the fifth connecting part 2135 are parallel to each other Setting; the second connecting portion 2132 and the fourth connecting portion 2134 are perpendicular to the first connecting portion 2131 .

During the use of this product, first place the office chair to be tested on the test equipment, drive the motor unit 400 to rotate, so that the screw group 500 drives the horizontal suspension frame 200 to move vertically to meet the specifications of the office chair to be tested, and then Debug each actuator separately so that each actuator corresponds to its test position, and then start the device to realize the mechanical performance test of multiple parts of the office chair at the same time. This test method is more in line with the actual use of the office chair. The stress situation in . Because a single test can only target one component at the same time, but the office chair is a whole. During actual use, each part is stressed at the same time, and there is also mutual influence. This mutual influence cannot be fully simulated in a single test, which will lead to The reliability of the results decreases. At the same time, this embodiment also retains the function of a single test. When only a single component needs to be tested in special circumstances, only the corresponding actuator can be turned on, so that the test process is more flexible, and the test can be carried out according to the actual situation.

In this embodiment, each actuator is provided with a corresponding connecting piece, which has an S-shaped centrally symmetrical structure, which can simulate the structure of human bones and joints, so that the buffering of each mechanism during the impact test The force is more in line with the impact of the human body on the seat, and highly simulates the real use situation, making the test effect better and the test result more reliable.

Please refer to FIG. 6 , in this embodiment, the first connecting member 213 , the second connecting member 221 and the third connecting member 231 are all made of titanium alloy. At the same time, the distance between the first connecting part 2131 and the third connecting part 2133 in the first connecting part 213 is defined as L1; The distance between the third connecting part 2133 is L2; the distance between the first connecting part 2131 and the third connecting part 2133 in the third connecting part 231 is defined as L3; wherein, L1>L3>L2. This distance setting can make the connecting parts more conform to the structure of human bones, wherein the first connecting part 213, the second connecting part 221 and the third connecting part 231 respectively simulate the human spine, trunk and arm bones and joint structure, so the specific spacing ratio is the largest for the first connecting member 213 and the smallest for the second connecting member 221 . This setting is because there are the most joints on the spine, so the spacing is set to the largest, and the torso is laterally stressed, so there are fewer corresponding joints, so the spacing is set to the smallest. More preferably, in order to conform to the structure of the human body, in this embodiment, the ratio of L1, L2, and L3 is 3:1:2; the value of L1 is 3CM.

Please refer to FIG. 3 , in this embodiment, the telescopic rod 212 includes an active rod 2122 , a driven rod 2123 , a first fixed piece 2124 and a second fixed piece 2121 , and the two ends of the active rod 2122 are connected to the second fixed piece respectively. A fixed piece 2124 is fixedly connected with the electric cylinder 211, the second fixed piece 2121 is slidably sleeved on the active rod 2122 and fixedly connected with the electric cylinder 211, one end of the driven rod 2123 is connected to the The first fixing piece 2124 is fixedly connected, and the other end is slidably sleeved in the second fixing piece 2121 . When in use, because the second fixed piece 2121 is fixedly connected with the electric cylinder 211, and cooperates with the driven rod 2123, it can be ensured that the active rod 2122 will not rotate when the telescopic rod 212 is working, so that during the test, the actuator exerts force on the office chair. The force is more stable and the test effect is better.

As a further improvement, in this embodiment, the support frame is further provided with an office chair fixing clip. It can make the office chair better fixed with the test equipment, and avoid sliding due to the impact of the actuator during the test. And the slider 110 is provided with a fixed handle 111 . Make the connection of each part more stable and make the test effect better.

Please refer to Fig. 2 and Fig. 7, described connecting rod 214 is provided with rectangular frame 2141, and described backrest test bar 220 passes through the midline on the vertical direction of described rectangular frame 2141; Described cushion test bar 210 and described backrest The included angle formed by the test bar 220 is 70°-75°. The spine and buttocks of the human body are on the same central axis. In order to allow the test to be more in line with the human body structure, a rectangular frame 2141 is set on the connecting rod 214, which can allow the backrest test rod 220 to pass therethrough, and the backrest test rod 220 to pass through the rectangular frame 2141, at the same time, set the seat cushion test rod 210 and the backrest test rod 220 to form an angle of 70°-75°, so that the force exerted by each actuator on the office chair is more in line with the force of the office chair when it is actually used , so that the test effect is better and the test results are more reliable.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. within the spirit and principles of the present utility model shall include Within the protection scope of the utility model.

Claims (10)

1. a kind of office seating Mechanics Performance Testing equipment, which is characterized in that including supporting rack, motor group, screw rod group and execution Mechanism；Support frame as described above includes outside support, horizontally suspends frame and vertical hanger bracket, described to horizontally suspend frame and vertical hanger bracket Both ends be slidably connected by sliding block and the outside support；The motor group is fixedly installed on support frame as described above, described Motor group is connect with the screw rod group, and the motor group is for driving the screw rod group to rotate, to realize that control is described horizontal outstanding Hanger vertical direction moves；The executing agency includes cushion reference test bar, backrest reference test bar and two handle reference test bars, the seat Pad reference test bar and the handle reference test bar are connect by sliding block with the frame that horizontally suspends, the backrest reference test bar by sliding block and The vertical hanger bracket connection；The cushion reference test bar includes sequentially connected electric cylinders, telescopic rod, the first connector, connecting rod Type pad is imitated with buttocks, the backrest reference test bar includes that type pad is imitated at sequentially connected electric cylinders, telescopic rod, the second connector and back, The handle reference test bar includes sequentially connected electric cylinders, telescopic rod, third connector and hand imitating assembly fixture；First connection The whole S-type centrosymmetric structure of part, second connector and the third connector, and include head per a connection piece Tail connected first connecting portion, second connecting portion, third interconnecting piece, the 4th interconnecting piece and the 5th interconnecting piece；Described first connects Socket part, third interconnecting piece and the 5th interconnecting piece are arranged in parallel；The second connecting portion and the 4th interconnecting piece hang down Directly in the first connecting portion.

2. test equipment according to claim 1, which is characterized in that first connector, second connector and The third connector is made of titanium alloy.

3. test equipment according to claim 1, which is characterized in that define the first connection described in first connector The spacing of portion to the third interconnecting piece is L1；First connecting portion described in second connector is defined to connect to the third The spacing in portion is L2；The spacing for defining first connecting portion described in the third connector to the third interconnecting piece is L3；Its In, L1>L3>L2.

4. test equipment according to claim 3, which is characterized in that the ratio of L1, L2, L3 are 3:1:2.

5. test equipment according to claim 4, which is characterized in that the value of L1 is 3CM.

6. test equipment according to claim 1, which is characterized in that the telescopic rod includes driving lever, follower lever, first The both ends of fixinig plate and the second fixinig plate, the driving lever are fixedly connected with first fixinig plate and the electric cylinders respectively, institute The second fixinig plate sliding sleeve is stated on the driving lever and is fixedly connected with the electric cylinders, described follower lever one end and described the One fixinig plate is fixedly connected, and other end sliding sleeve is set in second fixinig plate.

7. test equipment according to claim 1, which is characterized in that support frame as described above progress one is fixed equipped with office chair Folder.

8. test equipment according to claim 1, which is characterized in that the sliding block is equipped with fixed rotary handle.

9. test equipment according to claim 1, which is characterized in that the connecting rod is equipped with rectangle frame, the backrest Reference test bar passes through the center line on the rectangle frame vertical direction.

10. test equipment according to claim 9, which is characterized in that the cushion reference test bar and the backrest reference test bar The formed angle number of degrees are 70 ° -75 °.