Spring mounting tool equipment

By designing an automated spring-installing fixture, which uses a cylinder to drive a push block and a push rod, combined with magnetic adsorption, the problem of difficult installation of rocker arms and torsion springs on the lock body was solved. This enabled fast and accurate part positioning and installation, improving assembly precision and efficiency.

CN224223809UActive Publication Date: 2026-05-12ZHEJIANG ZHONGHENG LOCK IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG ZHONGHENG LOCK IND
Filing Date
2025-04-25
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

In the existing technology, the rocker arm, pivot, and torsion spring on the lock body lack space for hand operation during installation, which makes installation difficult and parts easy to fall off, making it difficult to achieve precise installation.

Method used

A spring-installing fixture was designed, including a base plate, clamping components, and assembly components. A cylinder drives a push block and a push rod, and the rocker arm and torsion spring are moved automatically through guide rails and guide grooves. Combined with a magnet to attract the pin, the part is accurately positioned and installed.

Benefits of technology

It enables rapid and accurate installation of the rocker arm and torsion spring, improving assembly precision and efficiency, and reducing the difficulty of manual operation and the risk of parts falling off.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides tool equipment for installing a spring, and belongs to the technical field of tool equipment. The problems that an installation space in an existing lock body is very compact, when workers install the lock body, position alignment is difficult, and parts are prone to falling off are solved. The clamping piece and the assembling assembly are installed on the bottom plate, the lock body is installed and fixed on the clamping piece, the assembling assembly comprises an installation piece and a driving piece for driving the installation piece to horizontally move and stretch out and draw back, the installation piece comprises a push block and a push rod, and a rocker arm and a torsion spring are arranged on the push block and the push rod respectively. The lock body is provided with an installation station, and the driving piece sequentially pushes the rocker arm and the torsional spring to move to the installation station for assembly. The utility model has the advantages that the rocker arm and the torsion spring can be automatically moved in place, the installation is rapid and accurate, and the assembly precision and the assembly efficiency are greatly improved.
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Description

Technical Field

[0001] This utility model belongs to the field of tooling equipment technology, and relates to a tooling equipment for installing springs. Background Technology

[0002] The lock body contains a rocker arm that can rotate relative to the lock body via a pivot. A torsion spring is fitted onto the pivot, with its two ends pressing against the rocker arm and the lock body, respectively. Because the rocker arm and torsion spring are relatively small, there isn't enough space for workers to grip them by hand during installation. Therefore, tools such as pliers and tweezers are required. Furthermore, the installation space within the lock body is very compact, making it difficult for workers to align the parts and causing them to fall out, resulting in a challenging installation process. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems that exist during the installation of rocker arms, pivots, and torsion springs on existing lock bodies, and to propose a tooling device that can automatically assemble them.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A spring mounting fixture is characterized in that it includes a base plate and a clamping component and an assembly assembly mounted on the base plate. A lock body is mounted and fixed on the clamping component. The assembly assembly includes a mounting component and a driving component for translating and extending the mounting component. The mounting component includes a push block and a push rod. A rocker arm and a torsion spring are respectively disposed on the push block and the push rod. The lock body is provided with an installation station. The driving component sequentially pushes the rocker arm and the torsion spring to the installation workpiece for assembly.

[0006] In the aforementioned spring mounting fixture, the lock body has two mounting stations, and there are two sets of assembly components, which are symmetrically arranged on the left and right sides of the clamping component.

[0007] In the aforementioned spring mounting fixture, the mounting components further include a guide rod and a mounting plate. The mounting plate is fixed to the end of the driving component, and the guide rod and push rod are fixed to the mounting plate. The push block is movably mounted on the guide rod and can move back and forth relative to the guide rod. A spring is sleeved on the guide rod, and the two ends of the spring are pressed against the mounting plate and the push block, respectively.

[0008] In the aforementioned spring mounting fixture, the push block is provided with a clearance hole for the push rod and the torsion spring to pass through. The torsion spring is placed inside the push block, and the push rod passes through the push block and pushes the torsion spring through the clearance hole to move to the installation position.

[0009] In the aforementioned spring mounting fixture, the push block is provided with a contact surface. The driving component pushes the push block to move horizontally until the contact surface abuts against the clamping component, at which point the corresponding rocker arm moves to the aforementioned mounting position. The driving component drives the mounting plate and push rod to move horizontally and compress the spring until the mounting plate abuts against the push block, at which point the corresponding torsion spring moves to the aforementioned mounting position.

[0010] In the aforementioned spring mounting fixture, a guide rail is fixedly provided on the base plate, and a guide groove is provided on the push block. The guide rail is embedded in the guide groove, and the push block moves back and forth along the guide rail.

[0011] In the aforementioned spring mounting fixture, the clamping component includes a fixed plate, several positioning pins and several positioning blocks fixed on the fixed plate; a vertical back plate is provided on the lock body, the outer side of the back plate abuts against the positioning pins, and the inner side of the back plate abuts against the positioning blocks, for limiting the longitudinal translation of the lock body; two symmetrical vertical plates are provided on the lock body, the inner sides of the two vertical plates abut against the two positioning blocks respectively, for limiting the lateral translation of the lock body.

[0012] In the aforementioned spring mounting fixture, a pin is provided on the rocker arm, and a through mounting hole is provided on the rocker arm. The pin is inserted into the mounting hole from bottom to top, and a boss is provided at the lower end of the pin. A magnet is fixed on the push block, and the position of the magnet corresponds to the position of the pin. The magnet is used to attract the pin and prevent the pin on the rocker arm from falling off before the rocker arm is installed into the lock body.

[0013] In the aforementioned spring-loading fixture, the driving component includes a cylinder.

[0014] Compared with the prior art, this utility model first fixes the lock body to the clamping part, then places the torsion spring and rocker arm on the push block. The push block and push rod are pushed to move horizontally by the cylinder. The push block moves to abut against the clamping part first, and then moves the rocker arm into place. The push rod continues to push the torsion spring to move and compress the spring until the torsion spring is in place. The worker then inserts the pin into the hole of the rocker arm so that the torsion spring is sleeved on the rotating shaft. Compared with the manual installation of the rocker arm and torsion spring, this utility model can automatically move the rocker arm and torsion spring into place, and the installation is fast and accurate, which greatly improves the assembly accuracy and assembly efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a top view of the present invention before installation;

[0017] Figure 3 This is a top view of the rocker arm of this utility model moving to the installation position;

[0018] Figure 4This is a top view of the torsion spring of this utility model moving to the installation position;

[0019] Figure 5 This is a schematic diagram of the push rod and push block of this utility model;

[0020] Figure 6 This is a schematic diagram of the installation of the lock body and clamping component of this utility model;

[0021] Figure 7 This is a schematic diagram of the installation of the magnet of this utility model.

[0022] In the diagram, 1. Lock body; 2. Rocker arm; 3. Torsion spring; 4. Base plate; 5. Push block; 6. Push rod; 7. Guide rod; 8. Mounting plate; 9. Spring; 10. Abutment surface; 11. Guide rail; 12. Fixing plate; 13. Positioning pin; 14. Positioning block; 15. Back plate; 16. Vertical plate; 17. Pin shaft; 18. Magnet; 19. Cylinder. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] like Figure 1 As shown, the spring mounting fixture of this utility model includes a base plate 4 and clamping components and assembly components mounted on the base plate 4. A lock body 1 is fixedly mounted on the clamping components. The assembly components include mounting parts and a driving component for translating and extending the mounting parts. The mounting parts include a push block 5 and a push rod 6. A rocker arm 2 and a torsion spring 3 are respectively mounted on the push block 5 and the push rod 6. The lock body 1 has one mounting station. The driving component sequentially pushes the rocker arm 2 and the torsion spring 3 to the mounting workpiece for assembly. The lock body 1 has two mounting stations, and there are two sets of assembly components symmetrically arranged on the left and right sides of the clamping components. The driving component includes a cylinder 19.

[0025] like Figure 5 As shown, the mounting component also includes a guide rod 7 and a mounting plate 8. The mounting plate 8 is fixed to the end of the driving component. The guide rod 7 and the push rod 6 are fixed on the mounting plate 8. The push block 5 is movably mounted on the guide rod 7 and can move back and forth relative to the guide rod 7. A spring 9 is sleeved on the guide rod 7, and the two ends of the spring 9 are pressed against the mounting plate 8 and the push block 5 respectively. The push block 5 has a clearance hole for the push rod 6 and the torsion spring 3 to pass through. The torsion spring 3 is placed inside the push block 5. The push rod 6 passes through the push block 5 and pushes the torsion spring 3 through the clearance hole to move to the installation position.

[0026] The push block 5 is provided with a contact surface 10. The driving component pushes the push block 5 to move horizontally until the contact surface 10 abuts against the clamping component, at which point the corresponding rocker arm 2 moves to the above-mentioned installation position. The driving component drives the mounting plate 8 and the push rod 6 to move horizontally and compress the spring 9 until the mounting plate 8 abuts against the push block 5, at which point the corresponding torsion spring 3 moves to the above-mentioned installation position.

[0027] The base plate 4 is fixed with a guide rail 11, and the push block 5 is provided with a guide groove. The guide rail 11 is embedded in the guide groove, and the push block 5 moves back and forth along the guide rail 11.

[0028] like Figure 6 As shown, the clamping member includes a fixed plate 12, a plurality of positioning pins 13 and a plurality of positioning blocks 14 fixed on the fixed plate 12; a vertical back plate 15 is provided on the lock body 1, the outer side of the back plate 15 abuts against the positioning pins 13, and the inner side of the back plate 15 abuts against the positioning blocks 14, for limiting the longitudinal translation of the lock body 1; two symmetrical vertical plates 16 are provided on the lock body 1, the inner sides of the two vertical plates 16 abut against the two positioning blocks 14 respectively, for limiting the lateral translation of the lock body 1.

[0029] like Figure 7 As shown, the rocker arm 2 is provided with a pin 17, and the rocker arm 2 has a through mounting hole. The pin 17 is inserted into the mounting hole from bottom to top, and the lower end of the pin 17 is provided with a boss. The push block 5 is fixed with a magnet 18, and the position of the magnet 18 corresponds to the position of the pin 17. The magnet 18 is used to attract the pin 17 to prevent the pin 17 on the rocker arm 2 from falling off before the rocker arm 2 is installed into the lock body 1.

[0030] The working principle of this utility model is as follows:

[0031] like Figure 2 As shown, before installation, the worker places the spring 3 on the clamping component, and then places the torsion spring 3 and rocker arm 2 on the push block 5; after starting, as... Figure 3 As shown, cylinder 19 pushes push block 5 and push rod 6 to move horizontally. Push block 5 first moves to abut against the clamping part, thus moving rocker arm 2 into position; as Figure 4 As shown, the end of cylinder 19 continues to extend, and push rod 6 continues to push torsion spring 3 to move and compress spring 9 until torsion spring 3 moves into place; when rocker arm 2 and torsion spring 3 have both moved to the installation position, the worker inserts pin 17 into the hole of rocker arm 2 so that torsion spring 3 is fitted on the rotating shaft; cylinder 19 drives push rod 6 and push block 5 to reset.

[0032] It should be understood that in the claims and description of this utility model, all instances of "comprising..." should be understood as having an open meaning, that is, their meaning is equivalent to "containing at least...", and should not be understood as having a closed meaning, that is, their meaning should not be understood as "containing only...".

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A spring-loading fixture, characterized in that, The lock body (1) includes a base plate (4) and clamping parts and assembly components mounted on the base plate (4). The lock body (1) is fixed on the clamping parts. The assembly components include mounting parts and driving parts that drive the mounting parts to translate and extend. The mounting parts include a push block (5) and a push rod (6). The rocker arm (2) and the torsion spring (3) are respectively mounted on the push block (5) and the push rod (6). The lock body (1) is provided with an installation station. The driving parts push the rocker arm (2) and the torsion spring (3) to the installation station in sequence for assembly.

2. The spring-loading fixture according to claim 1, characterized in that, The lock body (1) has two installation stations and two sets of assembly components, which are symmetrically arranged on the left and right sides of the clamping component.

3. The spring-loading fixture according to claim 1, characterized in that, The mounting component also includes a guide rod (7) and a mounting plate (8). The mounting plate (8) is fixed to the end of the drive component. The guide rod (7) and the push rod (6) are fixed on the mounting plate (8). The push block (5) is movably mounted on the guide rod (7) and can move back and forth relative to the guide rod (7). A spring (9) is sleeved on the guide rod (7). The two ends of the spring (9) are pressed against the mounting plate (8) and the push block (5) respectively.

4. The spring-loading fixture according to claim 1, characterized in that, The push block (5) has a clearance hole for the push rod (6) and the torsion spring (3) to pass through. The torsion spring (3) is placed inside the push block (5). The push rod (6) passes through the push block (5) and pushes the torsion spring (3) through the clearance hole to move to the installation position.

5. A spring-loading fixture according to claim 3, characterized in that, The push block (5) is provided with a contact surface (10). The driving component pushes the push block (5) to move horizontally until the contact surface (10) abuts against the clamping component, and the corresponding rocker arm (2) moves to the above-mentioned installation position. The driving component drives the mounting plate (8) and the push rod (6) to move horizontally and compress the spring (9) until the mounting plate (8) abuts against the push block (5), and the corresponding torsion spring (3) moves to the above-mentioned installation position.

6. The spring-loading fixture according to claim 1, characterized in that, The base plate (4) is fixed with a guide rail (11), and the push block (5) is provided with a guide groove. The guide rail (11) is embedded in the guide groove, and the push block (5) moves back and forth along the guide rail (11).

7. The spring-loading fixture according to claim 1, characterized in that, The clamping component includes a fixed plate (12), a number of positioning pins (13) fixed on the fixed plate (12), and a number of positioning blocks (14); a vertical back plate (15) is provided on the lock body (1), the outer side of the back plate (15) abuts against the positioning pins (13), and the inner side of the back plate (15) abuts against the positioning blocks (14) to restrict the longitudinal translation of the lock body (1); two symmetrical vertical plates (16) are provided on the lock body (1), and the inner sides of the two vertical plates (16) abut against the two positioning blocks (14) respectively to restrict the lateral translation of the lock body (1).

8. The spring-loading fixture according to claim 1, characterized in that, The rocker arm (2) is provided with a pin (17) and a through mounting hole is provided on the rocker arm (2). The pin (17) is inserted into the mounting hole from bottom to top, and a boss is provided at the lower end of the pin (17). A magnet (18) is fixed on the push block (5), and the position of the magnet (18) corresponds to the position of the pin (17). The magnet (18) is used to attract the pin (17) to prevent the pin (17) on the rocker arm (2) from falling off before the rocker arm (2) is installed into the lock body (1).

9. A spring-loading fixture according to claim 1, characterized in that, The drive component includes a cylinder (19).