Double-scale dynamometer
By designing a dual-scale force gauge, the problem of scale deviation after long-term use of the force gauge is solved, enabling accurate measurement of tension and weight, and reducing manufacturing costs.
Patent Information
- Application Number
- CN202520163153.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing force gauges tend to have their scale and pointer deviate after prolonged use, leading to inaccurate measurements. Furthermore, they are limited in function and cannot simultaneously measure tension and weight.
Design a dual-scale force gauge that uses a sliding groove and locking pin structure inside the shell, combined with a screw and pointer adjustment mechanism to achieve pointer calibration, and reduces weight and cost by using plastic material.
It enables rapid calibration of the pointer and scale, and can simultaneously measure tension and weight, improving measurement accuracy and versatility while reducing manufacturing costs.
Smart Images
Figure CN223783770U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of physics experiment teaching technology, and in particular to a dual-scale force gauge. Background Technology
[0002] Understanding tension and weight through experiments—that is, experiments on force and weight—is an important part of elementary school teaching. If the effect of a force is the same as that of 1 Newton (N), then the magnitude of that force is 1 N. Secondly, the elongation of a spring is directly proportional to the magnitude of the force applied to it. Once the effect of 1 N is determined, it is easy to determine the effects of larger and smaller forces. Furthermore, springs are relatively stable and can be reused, so a spring balance can be used to measure the magnitude of force. However, spring balances will develop deviations over time; prolonged use and vibration can cause the scale and pointer to shift, resulting in a misalignment between the pointer and the scale. Summary of the Invention
[0003] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a dual-scale force gauge.
[0004] This utility model provides a dual-scale force gauge, including a housing 1. The front and rear surfaces of the housing 1 are respectively provided with scale plates 2 corresponding to weight and force. The housing 1 is equipped with a hook 3 and a pull member 5 located above the hook 3. A spring 4 connects the hook 3 and the pull member 5. The front and rear sides of the hook 3 are symmetrically provided with pointers 8 pointing to the scale plates 2. The upper end of the housing 1 is rotatably provided with a screw 6 for adjusting the up and down position of the pointers 8.
[0005] Furthermore, the outer casing 1 is vertically provided with a sliding groove 1.1 to accommodate the hook 3 and the pull member 5. The front and rear ends of the hook 3 are symmetrically provided with locking posts 7 to accommodate the pointer 8. The front and rear ends of the sliding groove 1.1 are vertically and symmetrically provided with movable grooves 1.2 to accommodate the movement of the locking posts 7.
[0006] Furthermore, the pull member 5 is composed of an upper pull part 5.1 connected to a lower connecting part 5.2, the spring 4 is connected to the connecting part 5.2, and a screw 5.3 that is screwed to the screw disc 6 is vertically arranged in the middle of the pull part 5.1.
[0007] Furthermore, the edges of the pull portion 5.1 are rounded.
[0008] Furthermore, the pull part 5.1 is composed of a double arc ring on the upper side connected to a concave frame on the lower side.
[0009] Furthermore, the outer wall of the spiral disc 6 is provided with friction texture.
[0010] Furthermore, the outer shell 1, the hook 3, and the pull piece 5 are all made of plastic.
[0011] The advantages of this invention are as follows: pointer calibration is achieved by rotating the screw, ensuring the pointer aligns with the scale; weight and force scale plates are correspondingly set on the front and rear surfaces, and the bidirectional scale design breaks the limitation of a single measurement function, allowing for both tensile force measurement and precise weight measurement, facilitating experimental and teaching observation; the friction texture facilitates experimental and teaching observation; the screw, along with the screw rod, rises and falls, and the screw rod drives the spring and hook to rise and fall through the connecting part, thereby adjusting the up and down position of the pointer at the hook; the rounded corners eliminate sharp edges, preventing injury to operators during use; the double arc ring allows for pulling with two fingers, increasing the point of force, and the concave frame can slide into the groove; the outer shell, hook, and pull piece are the main components, and the plastic material reduces weight and cost. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is the front view of the present invention;
[0014] Figure 3 This is a rear view of the present invention;
[0015] Figure 4 This is a partial rear view of the present invention. Detailed Implementation
[0016] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0018] See Figures 1 to 4This utility model provides a dual-scale force gauge, which includes a housing 1. The front and rear surfaces of the housing 1 are respectively provided with scale plates 2 corresponding to weight and force. This bidirectional scale design breaks the limitation of a single measurement function, allowing for both tensile force measurement and precise weight measurement. It meets the different measurement needs in experimental and teaching scenarios in one stop, facilitating experimental and teaching observation. Inside the housing 1, a hook 3 and a pull piece 5 are slidably mounted. A spring 4 connects the hook 3 and the pull piece 5. Pointers 8 pointing to the scale plates 2 are symmetrically arranged on the front and rear sides of the hook 3. A screw disk 6 for adjusting the vertical position of the pointer 8 is rotatably mounted on the upper end of the housing 1. The outer wall of the screw disk 6 is provided with friction texture, which facilitates rotation of the screw disk. Adjusting the pointer's position by rotating the screw disk facilitates instrument calibration. Vibrations generated during long-term use can cause the scale and pointer to deviate, resulting in a misalignment. When the instrument deviates due to long-term use, the operator can quickly calibrate the pointer by rotating the screw disk.
[0019] The outer casing 1 has a vertically opened groove 1.1 for accommodating the hook 3 and the pull piece 5. The hook 3 has symmetrically arranged locking posts 7 for accommodating the pointer 8 at both ends. The groove 1.1 has vertically and symmetrically opened movable grooves 1.2 for accommodating the locking posts 7 at both ends.
[0020] See Figure 1 , Figure 4 The pull member 5 consists of an upper pull part 5.1 connected to a lower connecting part 5.2. A spring 4 is connected to the connecting part 5.2. A screw 5.3, which is screwed to the screw disc 6, is vertically arranged in the middle of the pull part 5.1. When the screw disc is rotated, the fixed screw disc moves up and down with the screw. The screw drives the spring and hook to move up and down through the connecting part, thereby adjusting the up and down position of the pointer at the hook.
[0021] The edges of the pull section 5.1 are rounded. The rounded edges can eliminate sharp edges and prevent injury to operators during use.
[0022] The pull part 5.1 consists of a double-arc ring on the upper side connected to a concave frame on the lower side. The double-arc ring can be pulled with two fingers, thereby increasing the point of force, and the concave frame can slide into the groove.
[0023] The outer shell 1, hook 3, and pull tab 5 are all made of plastic. The outer shell, hook, and pull tab are the main components, and the use of plastic can reduce weight and cost.
[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A dual-scale force gauge, characterized in that: The device includes an outer casing, on the front and back surfaces of which are respectively provided with scale plates corresponding to weight and force. Inside the outer casing, a hook and a pull member located above the hook are slidably mounted. A spring connects the hook and the pull member. Pointers pointing to the scale plates are symmetrically arranged on the front and back sides of the hook. A screw is rotatably provided at the upper end of the outer casing for adjusting the up and down position of the pointers.
2. The dual-scale force gauge as described in claim 1, characterized in that: The outer casing has a vertically formed groove for accommodating the hook and the pull member. The front and rear ends of the hook are symmetrically provided with locking posts for accommodating the pointer. The front and rear ends of the groove have vertically and symmetrically formed movable grooves for accommodating the movement of the locking posts.
3. The dual-scale force gauge as described in claim 1, characterized in that: The pull member consists of an upper pull part connected to a lower connecting part, and the spring is connected to the connecting part. A screw rod that is screwed to the screw disc is vertically arranged in the middle of the pull part.
4. The dual-scale force gauge as described in claim 3, characterized in that: The edges of the pull section are rounded.
5. A dual-scale force gauge as described in claim 3, characterized in that: The pull section consists of a double-arc ring on the upper side connected to a concave frame on the lower side.
6. A dual-scale force gauge as described in claim 1, characterized in that: The outer wall of the spiral disc is provided with friction texture.
7. A dual-scale force gauge as described in claim 1, characterized in that: The outer shell, the hook, and the pull piece are all made of plastic.