Locking device with pressure monitoring function
By integrating pressure monitoring components and vacuum nozzles into the screw fastening device, the problem of insufficient screw fastening pressure monitoring in existing technologies is solved, thereby improving the accuracy and applicability of screw fastening.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- OTECH DONGGUAN CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-05
AI Technical Summary
Existing fastening devices cannot monitor or guide the fastening pressure in real time, resulting in screws being installed too tight or too loose, and the screwdriver bit being unable to enter narrow spaces or deep holes for fastening, thus reducing the accuracy and applicability of screw fastening.
A screw fastening device with pressure monitoring was designed, which integrates a pressure monitoring component and a vacuum nozzle. The device monitors the downward pressure of screw fastening in real time through a pressure sensor and uses a vacuum nozzle to achieve the adsorption function of the screwdriver bit. The extension part can enter narrow spaces or deep holes for fastening.
It enables real-time monitoring of screw fastening pressure, preventing screws from being installed too tight or too loose, improving fastening accuracy, and enhancing the applicability of the device in confined spaces or deep holes.
Smart Images

Figure CN224196313U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of locking device technology, specifically to a locking device with pressure monitoring. Background Technology
[0002] Currently, screws are used to fix various electronic products during assembly. With the continuous development of society, people's requirements for the quality of electronic products are also getting higher and higher. For example, the assembly precision of electronic products such as mobile phones, tablets, and game controllers directly affects the quality of the final product.
[0003] Existing screw fastening devices cannot monitor or guide the tightening pressure in real time, which can lead to screws being installed too tightly or too loosely, reducing the accuracy of screw fastening. Furthermore, their bits cannot enter confined spaces or deep holes for screw fastening, resulting in limited applicability.
[0004] Therefore, the applicant hereby proposes a locking device with pressure monitoring to solve the aforementioned problems. Utility Model Content
[0005] To address the shortcomings of existing technologies, this invention provides a locking device with pressure monitoring capabilities.
[0006] The technical solution of this utility model is as follows:
[0007] This utility model provides a locking device with pressure monitoring, including a fixed plate, a sliding assembly, a support base, an electric screwdriver, a pressure monitoring assembly, a vacuum nozzle, and a screwdriver bit; the fixed plate is vertically provided with a sliding assembly, the sliding assembly is fixedly connected to the support base at its moving end, the electric screwdriver is fixedly mounted on the non-connecting end of the support base, the pressure monitoring assembly is fixedly mounted on the top of the fixed plate and its working end is connected to the support base, the bottom of the fixed plate is provided with a vacuum nozzle below the electric screwdriver, and the connecting end of the screwdriver bit can pass through the vacuum nozzle and connect to the output end of the electric screwdriver.
[0008] Furthermore, the pressure monitoring assembly includes a fixing block, a pressure sensor, a guide rod, and a spring; the pressure sensor is fixed to the top of the fixing plate by the fixing block, the guide rod is located between the pressure sensor and the support base, the two ends of the guide rod are respectively connected to the pressure sensor and the support base, and the spring is sleeved on the guide rod.
[0009] Furthermore, the vacuum nozzle includes a vacuum section and a sealing cap; a vacuum chamber is formed inside the vacuum section, and a vacuum interface communicating with the vacuum chamber is provided on the outer side of the vacuum section. A first through hole is formed in the center of the top of the vacuum chamber. The sealing cap is threaded to the bottom of the vacuum section, and a second through hole is formed in the center of the bottom surface of the sealing cap. A sealing ring is provided in both the first and second through holes. Multiple air extraction holes are arranged in a ring on the outer side of the bit located inside the vacuum chamber, and multiple adsorption holes communicating with the corresponding air extraction holes are arranged in a ring on the working end face of the bit.
[0010] Furthermore, a stabilizing bearing is also provided at the top of the vacuum section above the first through hole.
[0011] Furthermore, the working end of the bit has an extension portion, the diameter of which is smaller than the diameter of the bit.
[0012] Furthermore, the sliding assembly includes a slide rail and a slide table; the slide rail is vertically fixed on the inner side of the fixed plate, the slide table is slidably disposed on the slide rail, and a support base is fixedly connected to the non-sliding end of the slide table.
[0013] The beneficial effects achieved by this utility model are as follows:
[0014] The present invention provides a screw fastening device with pressure monitoring. Through the integrated pressure monitoring component, it can monitor or guide the downward pressure of screw fastening in real time, thereby avoiding the problem of screws being installed too tight or too loose, and improving the accuracy of screw fastening.
[0015] The screwdriver bit has an extended end that allows it to enter confined spaces or deep holes for screw fastening, thus improving its applicability. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention.
[0017] Figure 2 yes Figure 1 Enlarged view of point A.
[0018] Figure 3 This is a schematic diagram of the internal structure of a vacuum nozzle.
[0019] Figure 4 yes Figure 3 Enlarged view of point B.
[0020] Figure 5 yes Figure 3 Enlarged view of point C.
[0021] Figure 6 This is a 3D diagram of a bit. Detailed Implementation
[0022] To facilitate understanding of this utility model by those skilled in the art, the specific embodiments of this utility model are clearly described below with reference to the accompanying drawings. Obviously, the specific embodiments described are merely preferred embodiments of this utility model, and not all embodiments.
[0023] like Figure 1-6 As shown, the present invention provides a locking device with pressure monitoring, comprising a fixed plate 1, a sliding assembly 2 for vertical displacement, a support base 3, an electric screwdriver 4 for driving the screwdriver bit to rotate, a pressure monitoring assembly 5 for monitoring and guiding the screw locking pressure, a vacuum nozzle 6 for locking the screwdriver bit and providing suction force to the screwdriver bit, and a screwdriver bit 7 for locking the screw; the fixed plate 1 is vertically provided with the sliding assembly 2, the sliding assembly 2 is fixedly connected to the support base 3 at its moving end, the electric screwdriver 4 is fixedly mounted on the non-connecting end of the support base 3, the pressure monitoring assembly 5 is fixedly mounted on the top of the fixed plate 1 and its working end is connected to the support base 3, the bottom of the fixed plate 1 is provided with the vacuum nozzle 6 below the electric screwdriver 4, and the connecting end of the screwdriver bit 7 can pass through the vacuum nozzle 6 and connect to the output end of the electric screwdriver 4.
[0024] The pressure monitoring component 5 includes a fixing block 51, a pressure sensor 52 for monitoring the pressure under screw fastening, a guide rod 53 for guiding the pressure under screw fastening, and a spring 54 for buffering the pressure under screw fastening. The pressure sensor 52 is fixed to the top of the fixing plate 1 by the fixing block 51. The guide rod 53 is located between the pressure sensor 52 and the support base 3, with both ends of the guide rod 53 connected to the pressure sensor 52 and the support base 3 respectively. The spring 54 is sleeved on the guide rod 53. During the fastening process, the support base drives the electric screwdriver to move upward along the sliding component, and the spring is compressed, so that the screwdriver bit is buffered when fastening the screw, avoiding damage to the workpiece due to excessive instantaneous pressure. The pressure sensor can monitor the pressure in real time, avoiding screw installation that is too tight or too loose, further improving the screw fastening accuracy, ensuring that the workpiece can be installed normally, and improving the yield rate.
[0025] The vacuum nozzle 6 includes a vacuum section 61 and a sealing cover 62. A vacuum chamber 611 is formed inside the vacuum section 61, and a vacuum interface 612 communicating with the vacuum chamber 611 is provided on the outer side of the vacuum section 61. The vacuum interface 612 can be connected to an external vacuum pumping device via a quick connector. A first through hole for the screwdriver bit 7 to pass through is centrally located at the top of the vacuum chamber 61. The sealing cover 62 is threaded to the bottom of the vacuum section 61, and a second through hole for the screwdriver bit 7 to pass through is centrally located on the bottom surface of the sealing cover 62. Sealing rings 63 are provided in both the first and second through holes. Multiple air extraction holes 71 are arranged in a ring on the outer surface of the screwdriver bit 7 located inside the vacuum chamber 611. Multiple adsorption holes 72 communicating with the corresponding air extraction holes 71 are arranged in a ring on the working end surface of the screwdriver bit 7, thus achieving the adsorption function for screws. The vacuum pumping device continuously extracts gas from the vacuum chamber through a gas pipe connected to the vacuum interface. At this time, the adsorption holes on the working end of the screwdriver bit adsorb the screw under the action of the gas pressure difference.
[0026] The top of the vacuum section 61, located above the first through hole, is also provided with a stabilizing bearing 64 for stabilizing the verticality of the bit; maintaining the verticality of the bit during the locking process enhances the practicality of the device.
[0027] The working end of the bit 7 has an extension 73, the diameter of which is smaller than the diameter of the bit 7; this facilitates screw fastening in narrow spaces or deep hole environments, improving adaptability and practicality.
[0028] The sliding assembly 2 includes a slide rail 21 and a slide table 22; the slide rail 21 is vertically fixed on the inner side of the fixed plate 1, and the slide table 22 is slidably mounted on the slide rail 21. The non-sliding end of the slide table 22 is fixedly connected to a support base 3; it is used to realize the up and down displacement movement of the electric screwdriver.
[0029] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.
Claims
1. A locking device with pressure monitoring, characterized in that: The device includes a fixed plate (1), a sliding assembly (2), a support base (3), an electric screwdriver (4), a pressure monitoring assembly (5), a vacuum nozzle (6), and a screwdriver bit (7). The fixed plate (1) is vertically provided with a sliding assembly (2), and the sliding assembly (2) is fixedly connected to the support base (3) at its moving end. The electric screwdriver (4) is fixed on the non-connecting end of the support base (3). The pressure monitoring assembly (5) is fixed on the top of the fixed plate (1) and its working end is connected to the support base (3). The bottom of the fixed plate (1) is provided with a vacuum nozzle (6) below the electric screwdriver (4). The connecting end of the screwdriver bit (7) can pass through the vacuum nozzle (6) and connect to the output end of the electric screwdriver (4).
2. The locking device with pressure monitoring according to claim 1, characterized in that: The pressure monitoring component (5) includes a fixing block (51), a pressure sensor (52), a guide rod (53), and a spring (54). The pressure sensor (52) is fixed to the top of the fixing plate (1) by the fixing block (51). The guide rod (53) is located between the pressure sensor (52) and the support base (3). The two ends of the guide rod (53) are connected to the pressure sensor (52) and the support base (3) respectively. The spring (54) is sleeved on the guide rod (53).
3. A locking device with pressure monitoring according to claim 1 or 2, characterized in that: The vacuum nozzle (6) includes a vacuum section (61) and a sealing cover (62); a vacuum chamber (611) is opened inside the vacuum section (61), and a vacuum interface (612) connected to the vacuum chamber (611) is provided on the outer side of the vacuum section (61). A first through hole is opened in the center of the top of the vacuum chamber (611), and the sealing cover (62) is threaded to the bottom of the vacuum section (61). A second through hole is opened in the center of the bottom surface of the sealing cover (62). A sealing ring (63) is provided in both the first through hole and the second through hole. A plurality of air extraction holes (71) are arranged in a ring on the outer side of the screwdriver bit (7) located inside the vacuum chamber (611). A plurality of adsorption holes (72) connected to the corresponding air extraction holes (71) are arranged in a ring on the working end surface of the screwdriver bit (7).
4. A locking device with pressure monitoring according to claim 3, characterized in that: The top of the vacuum section (61) is also provided with a stabilizing bearing (64) above the first through hole.
5. A locking device with pressure monitoring according to claim 1, characterized in that: The working end of the bit (7) has an extension (73) with a diameter smaller than that of the bit (7).
6. A locking device with pressure monitoring according to claim 1, characterized in that: The sliding assembly (2) includes a slide rail (21) and a slide table (22); the slide rail (21) is vertically fixed on the inner side of the fixed plate (1), the slide table (22) is slidably mounted on the slide rail (21), and a support base (3) is fixedly connected to the non-sliding end of the slide table (22).