Clamp and hinge springback time testing device

Abstract

The utility model discloses a clamp which comprises a jig seat, a positioning groove is formed in the jig seat, a plurality of limiting blocks are symmetrically arranged on the two sides of the positioning groove, a positioning block is arranged in the positioning groove and used for being in butt joint with a groove of a workpiece, and a first elastic block and a second elastic block are symmetrically arranged on the two sides of the positioning block. And a gap between the first elastic block and the second elastic block is smaller than the transverse outer diameter of the to-be-clamped part of the workpiece. The utility model further discloses a hinge springback time testing device which comprises the clamp and the springback sensor arranged at the front end of the clamp, and when the cup head of the hinge springback to be perpendicular from horizontal, the cup head is located in front of the springback sensor. According to the utility model, the rapid positioning of the workpiece is realized, the workpiece is clamped by the elastic block, the structure of the clamp is simplified, the positioning of the workpiece is more reliable, the springback time of the cup head is detected by the springback sensor, the detection efficiency is improved, the detection result is accurate, and the labor force is saved.

Description

Technical Field

[0001] The utility model relates to a clamp, in particular to a hinge rebound time testing device. Background Art

[0002] Hinges are widely used. As the connecting parts between the door body and the cabinet body, the hinge has the characteristic of rotating the door body around a fixed axis to open or close the door body. However, the hinge has mechanical inertia when rotating around the axis, and the door body and the cabinet body will produce noise due to collision, so hydraulic hinges are used to reduce the rotation inertia of the hinge. Hydraulic hinges, also known as damping hinges or buffer hinges, refer to a kind of muffler buffer hinge that uses high-density oil to flow in a directional manner in a closed container to achieve an ideal buffering effect. Hydraulic hinges can reduce impact force and reduce damage to the cabinet door when closing the door forcefully.

[0003] At present, the damping hinges on the cabinet doors also have requirements for the rebound time when closing the door. When testing the rebound time of the hydraulic hinge, it is necessary to fix the hinge body, push the cup head to flip, and test the time required for the cup head to open and close. Since the fixture only clamps the main body of the hinge, and the heavier cup head is suspended in the air, if the clamping force on the hinge is not enough, the hinge is easy to loosen, affecting the accuracy of the rebound time test. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides a clamp suitable for hinges, which can firmly clamp the hinges and improve the accuracy of rebound time testing.

[0005] The utility model is realized through the following technical solutions:

[0006] A clamp comprises a fixture seat, wherein a positioning groove is arranged on the fixture seat, a plurality of limit blocks are symmetrically arranged on both sides of the positioning groove, a positioning block is arranged in the positioning groove, the positioning block is used to dock with the groove of a workpiece, a first elastic block and a second elastic block are symmetrically arranged on both sides of the positioning block, and a gap between the first elastic block and the second elastic block is smaller than the transverse outer diameter of the part to be clamped of the workpiece.

[0007] Furthermore, the first elastic block is fixedly connected to the fixture seat.

[0008] Furthermore, the second elastic block includes a sliding portion and a fixing portion connected up and down.

[0009] Furthermore, the fixing portion is connected to a side surface of the fixture seat, and the elastic metal sheet is connected to a side surface of the second elastic block.

[0010] Furthermore, the second elastic block is slidably disposed on the fixture seat.

[0011] Furthermore, two ends of the elastic metal sheet are respectively connected to the second elastic block and the side surfaces of the fixture seat.

[0012] Furthermore, the elastic metal sheet is an elastic steel sheet, a copper sheet, a titanium sheet, a nickel sheet, an aluminum alloy sheet or a zinc alloy sheet.

[0013] Furthermore, the first elastic block and / or the second elastic block is a polyurethane elastomer block, a thermoplastic elastomer block, a thermoplastic vulcanized rubber block or a silicone rubber block.

[0014] The utility model also provides a hinge rebound time testing device, which can firmly clamp the hinge and improve the accuracy of the rebound time test.

[0015] The utility model is realized through the following technical solutions:

[0016] A hinge rebound time testing device comprises the fixture described in any of the above schemes, and a rebound sensor arranged at the front end of the fixture. When the cup head of the hinge rebounds from horizontal to vertical, the cup head is in front of the rebound sensor.

[0017] Further, the positional relationship between the rebound sensor and the fixture conforms to any of the following positional relationships: a. the rebound sensor is directly or indirectly installed on the front end surface of the fixture;

[0018] b. A mounting bracket is provided on the side of the fixture, and the rebound sensor is connected to the mounting bracket.

[0019] The rebound sensor is located at the oblique front side of the clamp.

[0020] Furthermore, the hinge rebound time testing device of the present invention further includes a timing unit, and the timing unit is electrically connected to the rebound sensor.

[0021] Furthermore, the rebound sensor is a distance sensor.

[0022] Compared with the existing technology, the beneficial effects of the utility model are:

[0023] (1) The utility model realizes rapid positioning of the workpiece by arranging positioning grooves and positioning blocks on the fixture seat, and arranging elastic blocks on both sides of the positioning blocks to clamp the workpiece, thereby simplifying the structure of the fixture, and arranging elastic metal sheets on the sides of the elastic blocks to increase the clamping force, so that the positioning of the workpiece is more reliable.

[0024] (2) Under the premise that the clamp fixes the hinge, the utility model detects the rebound time of the cup head by means of a rebound sensor arranged at the front end of the clamp. The utility model has a simple structure, improves the detection efficiency, ensures accurate detection results, and saves labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the hinge structure (the cup head is open);

[0026] Figure 2 This is a schematic diagram of the hinge structure from another perspective (the cup head is closed);

[0027] Figure 3 It is a structural schematic diagram of a hinge clamping device for testing hinge rebound time according to an embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the fixture of this embodiment clamping a workpiece;

[0029] Figure 5 A schematic diagram of the structure of the fixture of this embodiment clamping a workpiece from another perspective;

[0030] Figure 6 It is a partial structural schematic diagram of a hinge rebound time testing device according to an embodiment of the utility model;

[0031] Figure 7 for Figure 3 Schematic diagram of the partial half-section structure.

[0032] Description of the drawings: 1-clamp, 11-jig seat, 12-positioning groove, 13-limiting block, 14-positioning block, 15-first elastic block, 16-second elastic block, 16A-sliding part, 16B-fixing part, 17-elastic metal sheet, 30-workpiece, 3-hinge, 31-hinge body, 32-cup head, 33-groove, 4-fastener, 5-rebound sensor, 51-mounting bracket. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0034] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", "front", "back", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0037] Please refer to Figure 1-2 , shows a hinge 3 of an embodiment, including a hinge body 31 and a connecting cup head 32, and a groove 33 is arranged in the hinge body 31.

[0038] Please refer to Figure 3-7 The fixture 1 of the utility model includes a fixture seat 11, and a positioning groove 12 is provided on the fixture seat 11, which is used to place a workpiece 30. The space of the positioning groove 12 is set according to the shape of the workpiece 30. The accommodation space of the positioning groove 12 is larger than the space of the workpiece 30. In this embodiment, the hinge 3 is placed. The accommodation space of the positioning groove 12 is larger than the space of the hinge body 31. A plurality of limit blocks 13 are symmetrically arranged on both sides of the positioning groove 12. The space between the limit blocks 13 forms the positioning groove 12. In this embodiment, the limit blocks 13 are in the shape of convex blocks. The height of the convex blocks is not limited and is set according to the height of the workpiece 30; the positioning groove 1 2 is provided with a positioning block, which is used to dock with the groove 33 of the workpiece 30. The positioning block and the groove 33 have mutually matching shapes. With such a configuration, the workpiece 30 can be quickly positioned in the groove 33. The first elastic block 15 and the second elastic block 16 are symmetrically arranged on both sides of the positioning block. In this embodiment, two limit blocks 13 are arranged on the same side of the positioning groove 12, and the first elastic block 15 or the second elastic block 16 is arranged in the space between the two limit blocks 13. The number of limit blocks 13 is not limited in this application. The gap between the first elastic block 15 and the second elastic block 16 is smaller than the transverse outer diameter of the part to be clamped of the workpiece 30. With such a configuration, the workpiece 30 can be smoothly placed in the positioning groove 12, and is simultaneously clamped by the first elastic block 15 and the second elastic block 16 in the positioning groove 12, so that the positioning of the workpiece 30 (or the hinge 3) is more reliable. Compared with a complex manipulator or bolt fixing device, the clamp 1 of this embodiment has a simple structure and is easy to operate.

[0039] In one embodiment, the first elastic block 15 is fixedly connected to the fixture seat 11. Preferably, the first elastic block 15 is fixed to the fixture seat 11 via a fastener 4.

[0040] In one embodiment, please refer to Figure 7The second elastic block 16 includes a sliding portion 16A and a fixing portion 16B connected up and down, the fixing portion 16B is connected to the side of the fixture seat 11, and the elastic metal sheet 17 is connected to the side of the second elastic block 16. Preferably, the fastener 4 passes through the lower section of the elastic metal sheet 17 and the fixing portion 16B, and then is fixed to the side of the fixture seat 11, and the upper section of the elastic metal sheet 17 and the sliding portion 16A can be fixed by gluing.

[0041] In one embodiment, the difference from the previous embodiment is that the second elastic block 16 does not have a fixing portion 16B, the second elastic block 16 is slidably disposed on the fixture seat 11, and the two ends of the elastic metal sheet 17 are respectively connected to the second elastic block 16 and the side of the fixture seat 11. Preferably, the fastener 4 fixes the lower section of the elastic metal sheet 17 to the side of the fixture seat 11, and the upper section of the elastic metal sheet 17 can be fixed to the second elastic block 16 by gluing.

[0042] In one embodiment, the elastic metal sheet 17 is an elastic steel sheet, a copper sheet, a titanium sheet, a nickel sheet, an aluminum alloy sheet or a zinc alloy sheet. It is understandable that the material of the elastic metal sheet 17 is not limited to the above materials, as long as it has a certain elasticity.

[0043] In one embodiment, the first elastic block 15 and / or the second elastic block 16 are polyurethane elastic blocks, thermoplastic elastomer blocks, thermoplastic vulcanized rubber blocks or silicone rubber blocks. It is understandable that the material of the first elastic block 15 and / or the second elastic block 16 is not limited to the above materials, as long as it has a certain degree of elasticity.

[0044] The utility model realizes the rapid positioning of the workpiece 30 by providing a positioning groove 12 and a positioning block on the fixture seat 11, and provides elastic blocks on both sides of the positioning block to clamp the workpiece 30, thereby simplifying the structure of the fixture 1, and providing an elastic metal sheet 17 on the side of the elastic block to increase the clamping force, so that the positioning of the workpiece 30 is more reliable.

[0045] Please refer to Figure 3-7 The hinge rebound time testing device of the utility model comprises a fixture 1 of any of the above schemes, and a rebound sensor 5 arranged at the front end of the fixture 1. When the cup head 32 of the hinge 3 rebounds from horizontal to vertical, the cup head 32 is in front of the rebound sensor 5. When the cup head 32 enters the sensing area of ​​the rebound sensor 5, the rebound sensor 5 sends a signal.

[0046] In one embodiment, the rebound sensor 5 is directly or indirectly mounted on the front end surface of the clamp 1; for example, the rebound sensor 5 is directly mounted on the front end surface of the clamp 1, as long as the rebound sensor 5 does not affect the fixation of the hinge 3; for example, please refer to Figure 3 , Figure 4 , Figure 6The rebound sensor 5 is installed on the front end surface of the fixture 1 through a fixing seat, as long as the rebound sensor 5 does not affect the fixation of the hinge 3.

[0047] In one embodiment, a mounting bracket 51 is provided on the side of the clamp 1, and the rebound sensor 5 is connected to the mounting bracket 51. The rebound sensor 5 is located obliquely in front of the clamp 1. Such a configuration allows the rebound sensor 5 to have a larger space and greater flexibility.

[0048] In one embodiment, the hinge rebound time testing device of the present invention further includes a timing unit (not shown in the figure), which is electrically connected to the rebound sensor 5 and is used to display the time taken for the cup head 32 to be pushed upward until the rebound sensor 5 senses the cup head 32, as well as the rebound time.

[0049] In one embodiment, the rebound sensor 5 is a distance sensor.

[0050] The distance sensor of this embodiment may be a photoelectric sensor, but it is understandable that it may also be other types of sensors.

[0051] The working process of the hinge rebound time testing device of the utility model is as follows: the hinge is conveyed to the corresponding fixture 1, so that the hinge body is placed in the positioning groove 12, the positioning block in the positioning groove 12 is connected to the groove 33 of the hinge body, and the first positioning block and the second positioning block fix the hinge at the same time, and the elastic metal sheet 17 further increases the clamping force on the hinge, touches the cup head 32 in the horizontal state on the hinge, and under the action of pressure, the cup head 32 rotates from the horizontal position to the vertical position to complete the closure of the hinge, and the rebound sensor 5 senses the time required for the hinge to rebound, that is, to complete the closure, and the timing unit displays the rebound time.

[0052] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A fixture, comprising a fixture seat, wherein a positioning groove is provided on the fixture seat, a plurality of limit blocks are symmetrically provided on both sides of the positioning groove, a positioning block is provided in the positioning groove, and the positioning block is used to dock with the groove of the workpiece, characterized in that: A first elastic block and a second elastic block are symmetrically arranged on both sides of the positioning block, and a gap between the first elastic block and the second elastic block is smaller than a transverse outer diameter of a portion of the workpiece to be clamped.

2. The clamp according to claim 1, characterized in that: The first elastic block is fixedly connected to the fixture seat.

3. The clamp according to claim 1, characterized in that: The second elastic block includes a sliding portion and a fixing portion connected up and down.

4. The clamp according to claim 3, characterized in that: The fixing portion is connected to a side surface of the fixture seat, and the elastic metal sheet is connected to a side surface of the second elastic block.

5. The clamp according to claim 1, characterized in that: The second elastic block is slidably disposed on the fixture seat.

6. The clamp according to claim 5, characterized in that: Two ends of the elastic metal sheet are respectively connected to the second elastic block and the side surface of the fixture seat.

7. The clamp according to claim 4 or 6, characterized in that: The elastic metal sheet is an elastic steel sheet, a copper sheet, a titanium sheet, a nickel sheet, an aluminum alloy sheet or a zinc alloy sheet.

8. The clamp according to claim 1, characterized in that: The first elastic block and / or the second elastic block is a polyurethane elastomer block, a thermoplastic elastomer block, a thermoplastic vulcanized rubber block or a silicone rubber block.

9. A hinge rebound time testing device, comprising the fixture according to any one of claims 1 to 8, characterized in that: And a rebound sensor is arranged at the front end of the clamp, when the cup head of the hinge rebounds from horizontal to vertical, the cup head is located in front of the rebound sensor.

10. The hinge rebound time testing device according to claim 9, characterized in that: The positional relationship between the rebound sensor and the fixture conforms to any of the following positional relationships: a. The rebound sensor is directly or indirectly mounted on the front end surface of the fixture; b. A mounting bracket is provided on the side of the clamp, the rebound sensor is connected to the mounting bracket, and the rebound sensor is located obliquely in front of the clamp.

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