Tension test fixture for middle frame and bottom shell of watch

Abstract

The utility model discloses a tension test fixture for a middle frame and a bottom shell of a watch. The tension test fixture comprises a fixed seat and a middle frame hanging buckle assembly, the fixing seat is provided with a fixing seat through hole used for being movably inserted into a watch middle frame, and the top edge of the fixing seat through hole is provided with a bottom shell positioning part used for positioning a watch bottom shell. The middle frame hanging buckle assembly comprises a sleeve body, a screw rod, a screw and an inner supporting mechanism, the screw rod movably penetrates through the inner supporting mechanism and the sleeve body from top to bottom, the lower end of the inner supporting mechanism is arranged in the sleeve body in an expandable and contractible mode, and the screw is connected to the lower end of the screw rod in a screwed mode and abuts against the lower side of the sleeve body. The middle part of the inner supporting mechanism is provided with a supporting cavity, and the outer part of the inner supporting mechanism is provided with a hanging buckle part for hanging a watch middle frame; a nut is arranged at the upper end of the screw rod and matched with the opening cavity in a pushing mode. According to the utility model, the fixed seat can position the bottom shell of the watch, and the middle frame hanging buckle assembly can uniformly hang the middle frame of the watch from a plurality of positions, so that the tension tester can stably apply tension or thrust to the middle frame hanging buckle assembly so as to carry out tension test, and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of smart watch processing devices, and in particular to a tension test fixture for a watch middle frame and a bottom shell. Background Art

[0002] like Figure 1 and Figure 2 As shown, a smart watch includes a watch middle frame 100 and a watch bottom shell 200, and the watch middle frame 100 and the watch bottom shell 200 are assembled and connected to each other, and the connection is fixed by glue dispensing. After the watch middle frame 100 and the watch bottom shell 200 are assembled, connected and fixed, a tensile test is required to test whether the connection firmness between the watch middle frame 100 and the watch bottom shell 200 is qualified. During the tensile test, the watch middle frame 100 needs to be fixed, and then the watch middle frame 100 is pulled by a tensile tester for testing, but the problem is that the current tensile tester cannot directly hang the watch middle frame 100. Moreover, since the connection between the watch middle frame 100 and the watch bottom shell 200 is a ring-shaped connection ring, the tensile tester cannot only hang one point of the watch middle frame 100 for tensile testing, otherwise there will be a problem of uneven tension. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a tensile testing fixture for a middle frame and a bottom shell of a watch in view of the deficiencies of the above-mentioned prior art. The fixing seat of the tensile testing fixture can position the bottom shell of the watch, and the middle frame buckle assembly of the tensile testing fixture can evenly hang the middle frame of the watch from multiple positions, so that the tensile tester can stably apply tension or thrust to the middle frame buckle assembly, thereby completing the tensile test of the middle frame and the bottom shell of the watch with high reliability.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a tensile test fixture for the middle frame and bottom shell of a watch, comprising a fixing seat and a middle frame hanging buckle assembly; the fixing seat is provided with a fixing seat through hole for movably inserting the middle frame of the watch, and a bottom shell positioning portion for positioning the bottom shell of the watch is provided at the top edge of the fixing seat through hole; the middle frame hanging buckle assembly comprises a sleeve, a screw, a screw and an inner support mechanism, the screw movably passes through the inner support mechanism and the sleeve from top to bottom, the lower end of the inner support mechanism is expandably placed in the sleeve, the screw is screwed to the lower end of the screw and It presses against the lower side of the sleeve; a support cavity is provided in the middle of the inner support mechanism, and a buckle part for hanging the middle frame of the watch is provided on the outside of the inner support mechanism; a nut is provided at the upper end of the screw rod, and the nut and the support cavity are pushed and matched; when the screw is tightened, the screw rod moves downward relative to the screw, and the nut can form a pushing effect on the support cavity, pushing the inner support mechanism to expand outward, so that the buckle part hangs on the middle frame of the watch; when the screw is loosened, the screw rod moves upward relative to the screw, which can release the pushing effect of the nut on the support cavity, so that the inner support mechanism can shrink inward, and the buckle part is separated from the middle frame of the watch.

[0005] Preferably, the upper end of the expansion cavity of the inner support mechanism has a frustum-shaped inner side surface, and the nut is provided with a frustum-shaped outer side surface corresponding to the frustum-shaped inner side surface. The diameter of the upper end of the frustum-shaped outer side surface is larger than the diameter of the lower end of the frustum-shaped outer side surface; the lower end of the expansion cavity of the inner support mechanism has a limiting end surface, and the limiting end surface is used to limit the end position of the downward movement of the nut.

[0006] Preferably, the inner support mechanism is formed by at least two inner support members assembled together, and the inner support members are arranged in a circle and are in clearance fit with each other. Further, the number of the inner support members is eight.

[0007] Preferably, the upper end of the sleeve body is provided with a sleeve cavity, and the lower end of the inner support mechanism is provided with an insertion portion, and the insertion portion is telescopically inserted into the sleeve cavity. The bottom of the sleeve cavity is used to limit the lower end position of the insertion portion; the sleeve body is provided with a sleeve through hole for the screw rod to pass through movably, and the sleeve through hole is located in the middle of the bottom of the sleeve cavity.

[0008] Preferably, both sides of the fixed seat are provided with stepped fixing portions for fixing on external devices.

[0009] The beneficial effects of the present utility model are as follows: First, since the fixed seat of the present utility model is provided with a fixed seat through hole for movably inserting into the middle frame of the watch, and a bottom shell positioning portion for positioning the watch bottom shell is provided at the top edge of the fixed seat through hole, therefore, the fixed seat of the present utility model can position the watch bottom shell; Second, the middle frame hanging buckle assembly of the present utility model can expand the inner support mechanism outward and hang on the middle frame of the watch by tightening the screw, so that the tensile tester can stably apply a tensile force or a thrust force to the middle frame hanging buckle assembly, thereby completing the tensile test of the middle frame and the bottom shell of the watch; after the tensile test is completed, the middle frame hanging buckle assembly of the present utility model can also loosen the screw, so that the inner support mechanism can contract inward and separate from the middle frame of the watch, and then take out the entire middle frame and the watch case of the watch together from the tensile test fixture; Third, since the outer part of the inner support mechanism is provided with a hanging buckle portion for hanging on the middle frame of the watch, and the inner support mechanism expands outward to make the hanging buckle portion hang on the middle frame of the watch, therefore, the hanging buckle portion of the inner support mechanism can hang on the inner wall of the middle frame of the watch from multiple positions, so that the tensile tester can evenly perform a tensile test on the middle frame of the watch from multiple positions, and the reliability is high. Description of the Drawings

[0010] Figure 1 It is a combined state structure diagram of the middle frame of the watch and the watch bottom shell.

[0011] Figure 2 It is a separated state structure diagram of the middle frame of the watch and the watch bottom shell.

[0012] Figure 3 It is one of the overall structure diagrams of the present utility model.

[0013] Figure 4 This is the second overall structure diagram of the present utility model.

[0014] Figure 5 This is the first decentralized structure diagram of the present utility model.

[0015] Figure 6 This is the second decentralized structure diagram of the present utility model.

[0016] Figure 7 This is the longitudinal sectional structure diagram of the present utility model. Detailed implementation manners

[0017] The structural principle and working principle of the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] As Figures 3 - 7 shown, with reference to Figure 1 and Figure 2The utility model is a tensile test fixture for a middle frame and a bottom shell of a watch, comprising a fixing seat 1 and a middle frame buckle assembly; the fixing seat 1 is provided with a fixing seat through hole 11 for movably inserting the middle frame 100 of the watch, and a bottom shell positioning portion 12 for positioning the bottom shell 200 of the watch is provided at the top edge of the fixing seat through hole 11; the middle frame buckle assembly comprises a sleeve 2, a screw rod 3, a screw 4 and an inner support mechanism 5, the screw rod 3 movably passes through the inner support mechanism 5 and the sleeve 2 from top to bottom, the lower end of the inner support mechanism 5 is scalably placed in the sleeve 2, the screw 4 is screwed to the lower end of the screw rod 3 and abuts against the lower side of the sleeve 2; the middle part of the inner support mechanism 5 A support cavity 51 is provided, and a hook portion 52 for hanging the watch middle frame 100 is provided on the outside of the inner support mechanism 5; a nut 6 is provided at the upper end of the screw rod 3, and the nut 6 is integrally connected to the screw rod 3, and the nut 6 and the support cavity 51 push each other; when the screw 4 is tightened, the screw rod 3 moves downward relative to the screw 4, and the nut 6 can form a pushing effect on the support cavity 51, pushing the inner support mechanism 5 to expand outward, so that the hook portion 52 hangs the watch middle frame 100; when the screw 4 is loosened, the screw rod 3 moves upward relative to the screw 4, which can release the pushing effect of the nut 6 on the support cavity 51, so that the inner support mechanism 5 can shrink inward, and the hook portion 52 is separated from the watch middle frame 100. The fixing seat 1 of the utility model can position the bottom shell 200 of the watch; the middle frame buckle assembly of the utility model can expand the inner support mechanism 5 outward and hang the middle frame 100 of the watch by tightening the screw 4, so that the tension tester (not shown) can stably apply tension or thrust to the middle frame buckle assembly, thereby completing the tension test of the middle frame 100 of the watch and the bottom shell 200 of the watch; and after completing the tension test, the middle frame buckle assembly of the utility model can make the inner support mechanism 5 shrink inward and separate from the middle frame of the watch by loosening the screw 4, and then the entire middle frame of the watch and the case are taken out of the tension test fixture together; because the outer part of the inner support mechanism 5 is provided with a buckle part 52 for hanging the middle frame of the watch, the inner support mechanism 5 is expanded outward so that the buckle part 52 hangs the middle frame of the watch, therefore, the buckle part 52 of the inner support mechanism 5 can hang the inner wall of the middle frame of the watch from multiple positions, so that the tension tester can perform tension test on the middle frame of the watch from multiple positions in a balanced manner, and the reliability is high.

[0019] like Figures 5 - 7As shown, the upper end of the expansion cavity 51 of the inner support mechanism 5 has a frustum-shaped inner side surface 53. The nut 6 is provided with a frustum-shaped outer side surface 61 corresponding to the frustum-shaped inner side surface 53. The diameter of the upper end of the frustum-shaped outer side surface 61 is larger than the diameter of the lower end of the frustum-shaped outer side surface 61. The lower end of the expansion cavity 51 of the inner support mechanism 5 has a limiting end surface 54, and the limiting end surface 54 is used to limit the end position of the downward movement of the nut 6. The structure of the frustum-shaped inner side surface 53 and the frustum-shaped outer side surface 61 pushing and cooperating with each other enables the nut 6 to evenly push the inner support mechanism 5 to expand outward from the surrounding directions when the screw rod 3 moves downward relative to the screw 4, further improving the balance and stability of the outward expansion of the inner support mechanism 5.

[0020] As Figures 4 - 7 shown, the inner support mechanism 5 is formed by at least two inner support members 55 assembled together. Each inner support member 55 encloses a circle and is in clearance fit with each other. Preferably, the number of the inner support members 55 is eight.

[0021] As Figures 4 - 7 shown, the upper end of the sleeve body 2 is provided with a sleeve cavity 21. The lower end of the inner support mechanism 5 is provided with an insertion portion 56, and the insertion portion 56 is telescopically inserted into the sleeve cavity 21. The bottom of the sleeve cavity 21 is used to limit the lower end position of the insertion portion 56. The sleeve body 2 is provided with a sleeve through hole 22 for the screw rod 3 to pass through movably, and the sleeve through hole 22 is located in the middle of the bottom of the sleeve cavity 21.

[0022] As Figures 3 - 7 shown, both sides of the fixed seat 1 are provided with stepped fixing portions 13 for fixing on an external device (not shown in the figure).

[0023] The usage method of the present utility model is as follows: First, fix the fixed seat 1 on the external device through the stepped fixing portions 13. Then, position the watch bottom case 200 on the bottom case positioning portion 12 of the fixed seat 1, and movably insert the watch middle frame 100 into the fixed seat through hole 11. Next, place the middle frame hanging buckle assembly into the watch middle frame 100, and align the hanging buckle portion 52 of the inner support mechanism 5 with the opposite wall of the watch middle frame 100. Then, tighten the screw 4, the screw rod 3 moves downward relative to the screw 4, the nut 6 exerts a pushing force on the expansion cavity 51, pushing the inner support mechanism 5 to expand outward, so that the hanging buckle portion 52 hooks the watch middle frame 100. Finally, use a tensile tester to apply a tensile force or a thrust force to the middle frame hanging buckle assembly to complete the tensile test of the watch middle frame 100 and the watch bottom case 200. After completing the tensile test, first loosen the screw 4, the screw rod 3 moves upward relative to the screw 4, and the pushing effect of the nut 6 on the expansion cavity 51 is released. Then, hold the inner support mechanism 5 and contract it inward, and the hanging buckle portion 52 is separated from the watch middle frame 100. Next, take out the middle frame hanging buckle assembly from the watch middle frame 100. Finally, take out the watch bottom case 200 and the watch middle frame 100 together.

[0024] The above are only the preferred embodiments of the present utility model. Any minor modifications, equivalent changes, and decorations made to the above embodiments based on the technical solutions of the present utility model all fall within the scope of the technical solutions of the present utility model.

Claims

1. A tensile test fixture for the middle frame and bottom case of a watch, characterized in that: The invention comprises a fixing seat (1) and a middle frame buckle assembly; the fixing seat (1) is provided with a fixing seat (1) through hole for movably inserting a middle frame (100) of a watch, and a bottom shell positioning portion (11) for positioning a bottom shell (200) of the watch is provided at the top edge of the fixing seat (1) through hole; the middle frame buckle assembly comprises a sleeve (2), a screw rod (3), a screw (4) and an inner support mechanism (5); the screw rod (3) movably passes through the inner support mechanism (5) and the sleeve (2) from top to bottom, the lower end of the inner support mechanism (5) is retractably arranged inside the sleeve (2), the screw (4) is screwed to the lower end of the screw rod (3) and abuts against the lower side of the sleeve (2); the middle part of the inner support mechanism (5) is provided with a support cavity (51), and the inner support cavity (51) is provided with a support cavity (52) inside the sleeve (2). The support mechanism (5) is provided with a hook portion (52) for hooking the watch middle frame (100) on the outside; a nut (6) is provided on the upper end of the screw rod (3), and the nut (6) and the support cavity (51) are pushed and matched; when the screw (4) is tightened, the screw rod (3) moves downward relative to the screw (4), and the nut (6) can form a pushing effect on the support cavity (51), pushing the inner support mechanism (5) to expand outward, so that the hook portion (52) hooks the watch middle frame (100); when the screw (4) is loosened, the screw rod (3) moves upward relative to the screw (4), and the pushing effect of the nut (6) on the support cavity (51) can be released, so that the inner support mechanism (5) can be retracted inward, and the hook portion (52) is separated from the watch middle frame (100).

2. The tensile test fixture for the watch middle frame and bottom case according to claim 1, wherein: The upper end of the support cavity (51) of the inner support mechanism (5) has a truncated cone-shaped inner side surface (53); the nut (6) has a truncated cone-shaped outer side surface (61) corresponding to the truncated cone-shaped inner side surface (53); the upper end diameter of the truncated cone-shaped outer side surface (61) is larger than the lower end diameter of the truncated cone-shaped outer side surface (61); the lower end of the support cavity (51) of the inner support mechanism (5) has a limiting end surface (54), and the limiting end surface (54) is used to limit the end position of the nut (6) moving downward.

3. The tensile test fixture for the watch middle frame and bottom case according to claim 1, wherein: The inner support mechanism (5) is composed of at least two inner support members (55), and the inner support members (55) form a circle and are clearance-matched with each other.

4. The tensile test fixture for the watch middle frame and bottom case according to claim 1, characterized in that: The number of the inner support members (55) is eight.

5. The tensile test fixture for the watch middle frame and bottom case according to claim 1, characterized in that: The upper end of the sleeve (2) is provided with a sleeve cavity (21), and the lower end of the inner support mechanism (5) is provided with an insertion portion (56), the insertion portion (56) is expandably inserted into the sleeve cavity (21), and the cavity bottom of the sleeve cavity (21) is used to limit the lower end position of the insertion portion (56); the sleeve (2) is provided with a sleeve middle hole (22) for movably passing the screw rod (3), and the sleeve middle hole (22) is located in the middle of the cavity bottom of the sleeve cavity (21).

6. The tensile test fixture for the watch middle frame and bottom case according to any one of claims 1-5, characterized in that: Step-shaped fixing portions (13) for fixing on external devices are provided on both sides of the fixing seat (1).

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