Jig for detecting rigidity of plastic bottom plate of cushion

Abstract

The utility model relates to a jig for detecting the rigidity of a plastic bottom plate of a seat cushion, which comprises a clamping platform, a fixing clamp capable of moving back and forth relative to the clamping platform is arranged on the clamping platform, the fixing clamp comprises a lower clamping piece, an upper clamping piece is arranged above the lower clamping piece, a clamping groove is arranged at the clamping position of the upper clamping piece and the lower clamping piece, and the upper clamping piece and the lower clamping piece are arranged in the clamping groove. The clamping groove is a groove matched with the saddle beam in shape, a force application rod matched with the clamping platform for use is arranged above the fixing clamp, a pressure sensor is arranged on the force application rod, and the force application rod is fixedly connected with a universal digital display material testing machine. According to the utility model, the structure is reasonable, the shape of the fixing clamp is matched with that of the saddle beam, the fixing clamp is not contacted with the plastic base plate, the plastic base cannot bear pressure during deformation detection, the test result is more accurate, and the deformation of different positions of the plastic base plate can be tested by adjusting the positions of the clamping platform and the plastic base plate.

Description

Technical Field

[0001] The utility model relates to the field of project testing fixtures, in particular to a fixture for detecting the rigidity of the plastic bottom plate of a saddle. Background Art

[0002] Bicycle saddles can be divided into two types: narrow, long and hard saddles and wide and soft comfortable saddles. No matter which type of bicycle saddle, it needs to be in direct contact with the buttocks for a long time during cycling. During cycling, the saddle needs to bear most of the weight, so there are certain requirements for the deformation amount of the saddle bottom plate. The existing deformation amount detection fixtures cannot visually show the deformation situation during the test, and cannot fit well with the shape of the plastic bottom plate of the saddle. It is inconvenient to use when detecting the deformation amounts of different parts of the plastic bottom plate, and there will be certain errors during the deformation amount detection. Summary of the Utility Model

[0003] In order to overcome the deficiencies of the above-mentioned existing problems, the utility model provides a fixture for detecting the rigidity of the plastic bottom plate of a saddle.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a fixture for detecting the rigidity of the plastic bottom plate of a saddle, which includes a clamping platform. A fixed fixture that can move back and forth relative to the clamping platform is provided on the clamping platform. During use, the relative position of the fixed fixture and the clamping platform can be adjusted according to different types of plastic bottom plates. The fixed fixture includes a lower clamping piece and an upper clamping piece. A clamping groove is provided at the clamping joint of the upper clamping piece and the lower clamping piece. The clamping groove is a groove that fits the shape of the saddle beam. It can fix the plastic bottom plate while preventing the fixed fixture from contacting the plastic bottom plate, reducing the influence on the test data. During use, first place the saddle beam of the plastic bottom plate into the groove of the lower clamping piece, and then fix the upper clamping piece above the lower clamping piece, so that the plastic bottom plate is fixed above the clamping platform. A force-applying rod that can cooperate with the clamping platform is provided above the fixed fixture. A pressure sensor is provided on the force-applying rod. The force-applying rod is fixedly connected to a universal digital display material testing machine. The force-applying rod detects the deformation amount of the plastic bottom plate according to a fixed force and a fixed pressing time. The universal digital display material testing machine can accurately display the pressure applied to the plastic bottom plate and the deformation amount of the plastic bottom plate.

[0005] Preferably, fixed grooves are provided around the lower section of the clamping platform. The clamping platform is arranged above the fixed platform. The relative position of the clamping platform and the fixed platform can be adjusted according to requirements, and then the position of the clamping platform is fixed through the fixed grooves.

[0006] Preferably, first screw holes are symmetrically formed on both sides above the clamping platform, and second screw holes that can cooperate with the first screw holes are symmetrically formed on both sides of the lower clamping piece. Screws pass through the second screw holes from top to bottom and extend into the first screw holes. At this time, the lower clamping piece is fixed on the clamping platform, and the pressing position of the force-applying rod is the part of the plastic bottom plate that needs to be tested, which is simple to operate.

[0007] Preferably, first locking screw holes penetrating the upper clamping piece and the lower clamping piece are formed at corresponding positions between the upper clamping piece and the lower clamping piece, and a row of second locking screw holes that can cooperate with the first locking screw holes are formed in the middle above the clamping platform. The locking screws pass through the first locking screw holes and extend into the second locking screw holes, so that the upper clamping piece, the lower clamping piece and the clamping platform are relatively fixed.

[0008] Preferably, a sliding groove is provided above the clamping platform, and a sliding block that can cooperate with the sliding groove is fixedly connected to the bottom of the lower clamping piece. When adjusting the position, there is no need to deliberately adjust the angle to align the first screw hole and the second screw hole, making it simpler and more convenient to adjust the position of the lower clamping piece.

[0009] Preferably, a gasket is provided at the connection between the locking screw and the top surface of the first locking screw hole. The gasket can increase the friction between the locking screw and the first locking screw hole to prevent the locking screw from loosening.

[0010] The beneficial effects of the present invention are as follows: The clamping groove of the fixing fixture fits the shape of the saddle beam. The fixing fixture does not directly contact the plastic bottom plate. When detecting the deformation amount, the pressure borne by the fixing fixture for the plastic base can be reduced, the error can be minimized, and the test result can be made more accurate. In addition, the relative position of the fixing fixture and the clamping platform can be adjusted to test the deformation amounts of different positions of the plastic bottom plate. Moreover, a pressure sensor is provided on the force-applying rod, and the force-applying rod is fixedly connected to the universal digital display material fixture, which can accurately display the pressure applied to the plastic bottom plate and the deformation amount of the plastic bottom plate. A gasket is provided at the connection between the locking screw and the top surface of the first locking screw hole, and the gasket can increase the friction between the locking screw and the first locking screw hole to prevent the locking screw from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the drawings and embodiments.

[0012] Figure 1 is a perspective view of the present invention;

[0013] Figure 2 is an exploded view of the present invention;

[0014] In the figure, 1 is a clamping platform; 2 is a fixing groove; 3 is a gasket; 4 is a fixing fixture; 5 is a lower clamping piece; 6 is an upper clamping piece; 7 is a first screw hole; 8 is a second screw hole; 9 is a first locking screw hole; 10 is a second locking screw hole; 11 is a clamping groove; 12 is a force-applying rod; 13 is a sliding groove; 14 is a slider; 15 is a pressure sensor; 16 is a plastic base plate; 17 is a saddle beam; 18 is a locking screw. Detailed implementation manners

[0015] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.

[0016] Any feature disclosed in this specification (including any additional claims, abstract, and drawings), unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.

[0017] As Figure 1-2 shown, a jig for detecting the rigidity of a plastic base plate of a seat cushion includes a clamping platform 1. A fixing fixture 4 that can move back and forth relative to the clamping platform 1 is provided on the clamping platform 1. During use, the relative position of the fixing fixture 4 and the clamping platform 1 can be adjusted according to different types of plastic base plates. The fixing fixture 4 includes a lower clamping piece 5 and an upper clamping piece 6. A clamping groove 11 is provided at the clamping joint of the upper clamping piece 6 and the lower clamping piece 5. The clamping groove 11 is a groove that fits the shape of the saddle beam 17, which can fix the plastic base plate 16 while preventing the fixing fixture 4 from contacting the plastic base plate 16, reducing the influence on the test data. During use, first place the saddle beam 17 of the plastic base plate 16 into the groove of the lower clamping piece 5, and then fix the upper clamping piece 6 above the lower clamping piece 5, so that the plastic base plate 16 is fixed above the clamping platform 1. A force-applying rod 12 that can cooperate with the clamping platform 1 is provided above the fixing fixture 4. A pressure sensor 15 is provided on the force-applying rod 12. The force-applying rod 12 is fixedly connected to a universal digital display material testing machine. The force-applying rod 12 detects the deformation amount of the plastic base plate 16 according to a fixed force and a fixed pressing time. The universal digital display material testing machine can accurately display the pressure applied to the plastic base plate 16 and the deformation amount of the plastic base plate 16.

[0018] As Figure 1 shown, fixing grooves 2 are provided around the lower section of the clamping platform 1. The clamping platform 1 is arranged above a fixed platform, and the relative position of the clamping platform 1 and the fixed platform can be adjusted according to requirements, and then the position of the clamping platform 1 is fixed through the fixing grooves 2.

[0019] As Figure 1As shown in the figure, on both sides above the clamping platform 1, two rows of first screw holes 7 are symmetrically opened. On both sides of the lower clamping piece 5, two second screw holes 8 that can cooperate with the first screw holes 7 are symmetrically opened. Screws pass through the second screw holes 8 from top to bottom and extend into the first screw holes 7. At this time, the lower clamping piece 5 is fixed on the clamping platform 1, and the pressing position of the force-applying rod 12 is the part of the plastic base plate that needs to be tested, with simple operation.

[0020] As Figure 1 shown in the figure, at corresponding positions between the upper clamping piece 6 and the lower clamping piece 5, a first locking screw hole 9 that penetrates through the upper clamping piece 6 and the lower clamping piece 5 is opened. In the middle above the clamping platform 1, a row of second locking screw holes 10 that can cooperate with the first locking screw hole 9 is opened. The locking screw 18 passes through the first locking screw hole 9 and extends into the second locking screw hole 10, making the upper clamping piece 6, the lower clamping piece 5, and the clamping platform 1 relatively fixed.

[0021] As Figure 2 shown in the figure, a sliding groove 13 is provided above the clamping platform 1, and a sliding block 14 that can cooperate with the sliding groove 13 is fixedly connected to the bottom of the lower clamping piece 5. When adjusting the position, there is no need to deliberately adjust the angle to align the first screw hole 7 with the second screw hole 8, making it simpler and more convenient to adjust the position of the lower clamping piece 5.

[0022] As Figure 2 shown in the figure, a gasket 3 is provided at the connection between the locking screw 18 and the top surface of the first locking screw hole 9. The gasket 3 can play a role in increasing the friction between the locking screw 18 and the first locking screw hole 9 to prevent the locking screw from loosening.

[0023] This design is ingenious. The clamping groove of the fixing fixture fits the shape of the saddle beam. The fixing fixture does not directly contact the plastic base plate. When detecting the deformation amount, it can reduce the pressure borne by the fixing fixture for the plastic base, reduce errors, and make the test results more accurate. Moreover, the relative position of the fixing fixture and the clamping platform can be adjusted to test the deformation amounts of different positions of the plastic base plate. In addition, a pressure sensor is provided on the force-applying rod, and the force-applying rod is fixedly connected to the universal digital display material fixture, which can accurately display the pressure applied to the plastic base plate and the deformation amount of the plastic base plate. A gasket is provided at the connection between the locking screw and the top surface of the first locking screw hole, and the gasket can play a role in increasing the friction between the locking screw and the first locking screw hole to prevent the locking screw from loosening.

[0024] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature disclosed in this specification or any new combination, as well as any new method or process step disclosed or any new combination.

Claims

1. A jig for testing the rigidity of a plastic base plate of a seat cushion, characterized in that: The invention comprises a clamping platform (1), on which a fixing fixture (4) is provided which can move forward and backward relative to the clamping platform (1), the fixing fixture (4) comprises a lower clamping plate (5), an upper clamping plate (6) is provided above the lower clamping plate (5), a clamping groove (11) is provided at the clamping position of the upper clamping plate (6) and the lower clamping plate (5), the clamping groove (11) is a groove which matches the shape of a saddle beam (17), a force rod (12) used in conjunction with the clamping platform (1) is provided above the fixing fixture (4), a pressure sensor (15) is provided on the force rod (12), and the force rod (12) is fixedly connected to a universal digital display material testing machine.

2. A jig for detecting the rigidity of a plastic base plate of a seat cushion according to claim 1, characterized in that: The lower section of the clamping platform (1) is provided with fixing grooves (2) around its periphery.

3. A jig for detecting the rigidity of a plastic base plate of a seat cushion according to claim 1, characterized in that: Two rows of first screw holes (7) are symmetrically provided on both sides of the upper side of the clamping platform (1), and two second screw holes (8) for use in conjunction with the first screw holes (7) are symmetrically provided on both sides of the lower clamping piece (5).

4. The jig for detecting the rigidity of the plastic bottom plate of a seat cushion according to claim 1, characterized in that: A first locking screw hole (9) penetrating the upper clamping piece (6) and the lower clamping piece (5) is provided at a corresponding position between the upper clamping piece (6) and the lower clamping piece (5), and a row of second locking screw holes (10) for use with the first locking screw holes (9) are provided in the middle above the clamping platform (1). The locking screws (18) pass through the first locking screw holes (9) and extend into the second locking screw holes (10), so that the upper clamping piece (6), the lower clamping piece (5) and the clamping platform (1) are relatively fixed.

5. The jig for detecting the rigidity of the plastic base plate of a seat cushion according to claim 1, characterized in that: A slide groove (13) is provided above the clamping platform (1), and a sliding block (14) for use with the slide groove (13) is fixedly connected to the bottom of the lower clamping piece (5).

6. A jig for detecting the rigidity of a plastic base plate of a seat cushion according to claim 4, characterized in that: A gasket (3) is provided at the connection between the locking screw (18) and the top surface of the first locking screw hole (9).

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