Backrest lock testing fixture

Abstract

The utility model relates to a backrest lock testing fixture, which comprises a base and is characterized in that the base is provided with a lock body positioning seat, the lock body positioning seat is provided with a placing cavity matched with a lock body, one side of the lock body positioning seat is provided with pressing rods capable of reciprocating towards the lock body, and the number of the pressing rods is the same as that of lock body riveting rods. And one pressing rod is arranged corresponding to one lock body riveting rod, so that the maximum extrusion force which can be borne by different lock bodies can be detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to a testing fixture equipment field, concretely relates to a backrest lock testing fixture. BACKGROUND

[0002] The existing backrest lock is locked to the installation site by the threaded part of the riveting rod and the nut when being installed in the installation site, the nut and the riveting rod will generate extrusion force on the lock body with the rotation of the nut, there are many components that need to be rotated in the lock body, the riveting rod is the rotating center rod of the rotating component, if the extrusion force is too large, the components cannot rotate normally, and the range of the extrusion force is different for different lock bodies and production specifications, so a testing fixture is needed to detect the maximum extrusion force range that the lock body can withstand. SUMMARY

[0003] The utility model relates to a testing fixture equipment field, concretely relates to a backrest lock testing fixture.

[0004] The utility model relates to a testing fixture equipment field, concretely relates to a backrest lock testing fixture.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a backrest lock testing fixture, comprising a base, characterized by: the base is provided with a lock body positioning seat, the lock body positioning seat is provided with a placing cavity matched with the lock body, one side of the lock body positioning seat is provided with a pressure rod capable of reciprocating displacement towards the lock body, the number of the pressure rods is same with the number of the lock body riveting rods, and one pressure rod is matched with one lock body riveting rod.

[0006] The utility model has the characteristics that: the lock body positioning seat locks the lock body, the pressure rod displaces and presses the lock body riveting rod, the lock body positioning seat cooperates with the pressure rod to form the extrusion force on the lock body, the extrusion force generated by the rotation of the nut when the lock body is installed is simulated, the working simulation of the lock body is realized by repeatedly pulling the operation end of the lock body when the pressure rod gradually increases the force on the lock body riveting rod, until the lock body cannot work normally due to the extrusion force, at this time, the force generated by the pressure rod is the maximum extrusion force that the lock body can withstand.

[0007] The utility model further provides that: the lock body positioning seat comprises a first plate body and a second plate body, the first plate body and the second plate body are provided with a positioning cavity matched with the lock body, the second plate body is provided with a placing groove corresponding to the lock body riveting rod, the first plate body is provided with a through hole for the pressure rod to pass through, when the lock body is placed in the positioning cavity and the lock body riveting rod abuts against the bottom of the placing groove, the through hole is matched with the lock body riveting rod.

[0008] The utility model discloses the following features: the positioning cavity between the first plate body and the second plate body is used to place the lock body, the riveting rod of the lock body is placed in the placing groove, the installation state of the simulation lock body is formed, and the second plate body cooperates with the pressing rod to generate extrusion force.

[0009] The utility model further provides: the second plate body is equipped with the triangular support board on the side relative to the first plate body.

[0010] The utility model discloses the following features: the stress capacity of the second plate body is increased.

[0011] The utility model further provides: the pressing rod is arranged on the movable seat, and the movable seat is connected with the driving device that drives the movable seat to move towards the first plate body.

[0012] The utility model discloses the following features: the driving device drives the movable seat to drive the pressing rod to displace and extrude the riveting rod of the lock body.

[0013] The utility model further provides: the output end of the driving device is detachably connected with the movable seat.

[0014] The utility model further provides: the output end of the driving device is sleeved with the connecting seat, one end of the movable seat is equipped with the plug -in block relative to the pressing rod, the connecting seat is opened with the plug -in groove that is adapted to the plug -in block, the plug -in block is inserted in the plug -in groove, and the connecting hole that is equipped with the fastener is formed through the plug -in block and the connecting seat.

[0015] The utility model discloses the following features: the movable seat is detachably connected with the driving device, and the pressing rod required by the lock body of different replacement is convenient.

[0016] The utility model discloses the following features: the lock body positioning seat locks the lock body, the pressing rod displaces and presses the riveting rod of the lock body, the lock body positioning seat cooperates with the pressing rod to form the extrusion force to the lock body, when the nut is rotated and generates the extrusion force, when the riveting rod of the lock body is gradually increased by the pressing rod, the operation end of the lock body is repeatedly pulled to realize the working simulation of the lock body, until the lock body cannot normally work due to the extrusion force, and the force generated by the pressing rod is the maximum extrusion force that the lock body can bear.

[0017] The utility model will be further explained in detail in connection with the drawings and examples. DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the three -dimensional demonstration of the utility model embodiment Figure One .

[0019] Figure 2 It is the three -dimensional demonstration of the utility model embodiment Figure Two .

[0020] Figure 3 This is an exploded view of the connecting seat and the movable seat in an embodiment of this utility model.

[0021] Figure 4 This is a three-dimensional schematic diagram of the second plate body in an embodiment of this utility model. Detailed Implementation

[0022] like Figure 1 A backrest lock inspection tool includes a base 1, which has a lock body positioning seat with a placement cavity adapted to the lock body. One side of the lock body positioning seat has a pressing rod 2 that can move backward toward the lock body. The number of pressing rods 2 is the same as the number of lock body riveting rods 3, with one pressing rod 2 corresponding to one lock body riveting rod 3. The lock body positioning seat includes a first plate 4 and a second plate 5, with a positioning cavity 6 between the first plate 4 and the second plate 5 adapted to the lock body. The first plate 4 and the second plate 5 are inserted into the base 1 and connected to the base by screws, making the first plate 4 and the second plate 5 detachable for easy replacement for testing different lock bodies 7. The second plate 5 has a placement groove 8 corresponding to the lock body riveting rod 3. The first plate 4 has a through hole 9 for the pressing rod 2 to pass through. The lock body 7 is placed in the positioning cavity 6 and the lock body... When the riveting rod 3 abuts against the bottom of the placement groove 8, the through hole 9 is set corresponding to the lock body riveting rod 3. The second plate 5 is provided with a triangular support plate 10 on the side opposite to the first plate 4. The pressing rod 2 is set on the movable seat 11. The movable seat 11 is linked with a driving device 12 that drives the movable seat 11 to move towards the first plate 4. The output end of the driving device 12 is detachably connected to the movable seat 11. The output end of the driving device 12 is fitted with a connecting seat 13. The movable seat 11 is provided with a plug-in block 14 at one end opposite to the pressing rod 2. The connecting seat 13 is provided with a plug-in groove 15 that is adapted to the plug-in block 14. The plug-in block 14 is inserted into the plug-in groove 15. A connecting hole 16 is provided through the plug-in block 14 and the connecting seat 13. A fastener is provided in the connecting hole 16. The fastener can be a screw or bolt with a nut. The fastener is not shown in the figure.

Claims

1. A backrest lock gauge comprising a base, characterised in that: The base is provided with a lock body positioning seat provided with a placing cavity matched with the lock body, one side of the lock body positioning seat is provided with a pressing rod capable of reciprocating displacement towards the lock body, the number of the pressing rods is the same as the number of the lock body riveting rods, and one pressing rod is provided corresponding to one lock body riveting rod.

2. A backrest lock gauge according to claim 1, characterised in that: The lock body positioning seat comprises a first plate body and a second plate body, a positioning cavity matched with the lock body is arranged between the first plate body and the second plate body, the second plate body is provided with a placing groove corresponding to the lock body riveting rod, the first plate body is provided with a through hole for the pressing rod to pass through, and when the lock body is placed in the positioning cavity and the lock body riveting rod is in abutment with the bottom of the placing groove, the through hole is provided corresponding to the lock body riveting rod.

3. A backrest lock gauge according to claim 2, characterised in that: The second plate body is provided with a triangular supporting plate on one side relative to the first plate body.

4. A backrest lock gauge according to claim 2, characterised in that: The pressing rod is arranged on a movable seat, and the movable seat is linked with a driving device for driving the movable seat to displace towards the first plate body.

5. A backrest lock gauge according to claim 4, characterised in that: The output end of the driving device is detachably connected with the movable seat.

6. A backrest lock gauge according to claim 5, characterised in that: The output end of the driving device is sleeved with a connecting seat, one end of the movable seat relative to the pressing rod is provided with a plug-in block, the connecting seat is provided with a plug-in groove matched with the plug-in block, the plug-in block is plugged into the plug-in groove, a connecting hole is arranged through the plug-in block and the connecting seat, and a fastener is arranged in the connecting hole.

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